Last data update: Dec 09, 2024. (Total: 48320 publications since 2009)
Records 1-30 (of 31 Records) |
Query Trace: Blaney DD[original query] |
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Investigating the etiology of acute febrile illness: a prospective clinic-based study in Uganda
Kigozi BK , Kharod GA , Bukenya H , Shadomy SV , Haberling DL , Stoddard RA , Galloway RL , Tushabe P , Nankya A , Nsibambi T , Mbidde EK , Lutwama JJ , Perniciaro JL , Nicholson WL , Bower WA , Bwogi J , Blaney DD . BMC Infect Dis 2023 23 (1) 411 BACKGROUND: Historically, malaria has been the predominant cause of acute febrile illness (AFI) in sub-Saharan Africa. However, during the last two decades, malaria incidence has declined due to concerted public health control efforts, including the widespread use of rapid diagnostic tests leading to increased recognition of non-malarial AFI etiologies. Our understanding of non-malarial AFI is limited due to lack of laboratory diagnostic capacity. We aimed to determine the etiology of AFI in three distinct regions of Uganda. METHODS: A prospective clinic-based study that enrolled participants from April 2011 to January 2013 using standard diagnostic tests. Participant recruitment was from St. Paul's Health Centre (HC) IV, Ndejje HC IV, and Adumi HC IV in the western, central and northern regions, which differ by climate, environment, and population density. A Pearson's chi-square test was used to evaluate categorical variables, while a two-sample t-test and Krukalis-Wallis test were used for continuous variables. RESULTS: Of the 1281 participants, 450 (35.1%), 382 (29.8%), and 449 (35.1%) were recruited from the western, central, and northern regions, respectively. The median age (range) was 18 (2-93) years; 717 (56%) of the participants were female. At least one AFI pathogen was identified in 1054 (82.3%) participants; one or more non-malarial AFI pathogens were identified in 894 (69.8%) participants. The non-malarial AFI pathogens identified were chikungunya virus, 716 (55.9%); Spotted Fever Group rickettsia (SFGR), 336 (26.2%) and Typhus Group rickettsia (TGR), 97 (7.6%); typhoid fever (TF), 74 (5.8%); West Nile virus, 7 (0.5%); dengue virus, 10 (0.8%) and leptospirosis, 2 (0.2%) cases. No cases of brucellosis were identified. Malaria was diagnosed either concurrently or alone in 404 (31.5%) and 160 (12.5%) participants, respectively. In 227 (17.7%) participants, no cause of infection was identified. There were statistically significant differences in the occurrence and distribution of TF, TGR and SFGR, with TF and TGR observed more frequently in the western region (p = 0.001; p < 0.001) while SFGR in the northern region (p < 0.001). CONCLUSION: Malaria, arboviral infections, and rickettsioses are major causes of AFI in Uganda. Development of a Multiplexed Point-of-Care test would help identify the etiology of non-malarial AFI in regions with high AFI rates. |
Melioidosis in cynomolgus macaques ( macaca fascicularis ) imported to the United States from Cambodia
Taetzsch SJ , Swaney EM , Gee JE , Hidalgo PM , Broussard KR , Martines RB , Blaney DD , Galland GG , Gulvik CA , Marston CK , Liu L , Elrod MG , DeLeon-Carnes M , Tyler RD , Bower WA , Bhatnager J , Brown CM , Pieracci EG , Weiner ZP . Comp Med 2022 72 (6) 394-402 Melioidosis, a potentially fatal infectious disease of humans and animals, including nonhuman primates (NHPs), is caused by the high-consequence pathogen Burkholderia pseudomallei. This environmental bacterium is found in the soil and water of tropical regions, such as Southeast Asia, where melioidosis is endemic. The global movement of humans and animals can introduce B. pseudomallei into nonendemic regions of the United States, where environmental conditions could allow establishment of the organism. Approximately 60% of NHPs imported into the United States originate in countries considered endemic for melioidosis. To prevent the introduction of infectious agents to the United States, the Centers for Disease Control and Prevention (CDC) requires newly imported NHPs to be quarantined for at least 31 d, during which time their health is closely monitored. Most diseases of public health concern that are transmissible from imported NHPs have relatively short incubation periods that fall within the 31-d quarantine period. However, animals infected with B. pseudomallei may appear healthy for months to years before showing signs of illness, during which time they can shed the organism into the environment. Melioidosis presents diagnostic challenges because it causes nonspecific clinical signs, serologic screening can produce unreliable results, and culture isolates are often misidentified on rapid commercial testing systems. Here, we present a case of melioidosis in a cynomolgus macaque (Macaca fascicularis) that developed a subcutaneous abscess after importation from Cambodia to the United States. The bacterial isolate from the abscess was initially misidentified on a commercial test. This case emphasizes the possibility of melioidosis in NHPs imported from endemic countries and its associated diagnostic challenges. If melioidosis is suspected, diagnostic samples and culture isolates should be submitted to a laboratory in the CDC Laboratory Response Network for conclusive identification and characterization of the pathogen. |
Multistate Outbreak of Melioidosis Associated with Imported Aromatherapy Spray.
Gee JE , Bower WA , Kunkel A , Petras J , Gettings J , Bye M , Firestone M , Elrod MG , Liu L , Blaney DD , Zaldivar A , Raybern C , Ahmed FS , Honza H , Stonecipher S , O'Sullivan BJ , Lynfield R , Hunter M , Brennan S , Pavlick J , Gabel J , Drenzek C , Geller R , Lee C , Ritter JM , Zaki SR , Gulvik CA , Wilson WW , Beshearse E , Currie BJ , Webb JR , Weiner ZP , Negrón ME , Hoffmaster AR . N Engl J Med 2022 386 (9) 861-868 Melioidosis, caused by the bacterium Burkholderia pseudomallei, is an uncommon infection that is typically associated with exposure to soil and water in tropical and subtropical environments. It is rarely diagnosed in the continental United States. Patients with melioidosis in the United States commonly report travel to regions where melioidosis is endemic. We report a cluster of four non-travel-associated cases of melioidosis in Georgia, Kansas, Minnesota, and Texas. These cases were caused by the same strain of B. pseudomallei that was linked to an aromatherapy spray product imported from a melioidosis-endemic area. |
Case Report: A Fatal Case of Latent Melioidosis Activated by COVID-19.
Gulati U , Nanduri AC , Juneja P , Kaufman D , Elrod MG , Kolton CB , Gee JE , Garafalo K , Blaney DD . Am J Trop Med Hyg 2022 106 (4) 1170-2 Melioidosis, endemic in Southeast Asia and Northern Australia, is an uncommon but frequently fatal opportunistic infection caused by the Gram-negative saprophyte Burkholderia pseudomallei. We describe the first reported case of activation of latent melioidosis concurrent with COVID-19-associated lymphopenia and neutropenia in the setting of poorly controlled diabetes. A 43-year-old HIV-positive, diabetic man presented to the emergency department with persistent chills and progressive dyspnea. He was admitted for hypoxia. Chest X-ray showed bilateral parenchymal infiltrates suspicious for COVID-19. Shortly after admission, he became acutely encephalopathic, had a generalized seizure, and was transferred to the intensive care unit after intubation. Further workup showed severe neutropenia and lymphopenia. The patient received empiric antimicrobial coverage and was found to be severe acute respiratory syndrome coronavirus 2 positive. He deteriorated rapidly with refractory shock and persistent hypoxemia, and died 40 hours after admission. Blood cultures and sputum cultures obtained via bronchoalveolar lavage returned positive for Burkholderia pseudomallei. Given confirmed compliance with antiretrovirals, stable CD4 counts, and no recent foreign travel, the patient likely contracted the B. pseudomallei infection from travel to Southeast Asia many years prior and only became symptomatic after succumbing to severe acute respiratory syndrome coronavirus 2 infection. This case highlights the importance of considering activation of latent opportunistic infections by COVID-19 in immunocompromised patients. |
Ebola virus disease nosocomial infections in the Democratic Republic of the Congo: a descriptive study of cases during the 2018-2020 outbreak
Hazim CE , Kolwaite A , Blaney DD , Choi MJ , Park B , Montgomery JM . Int J Infect Dis 2021 115 126-133 OBJECTIVES: To describe the characteristics of cases of Ebola virus disease (EVD) nosocomial infections (NIs) in the Democratic Republic of the Congo, July 2018-May 2020, to inform future interventions. METHODS: We identified cases of NI during EVD outbreak response surveillance, and conducted a retrospective analysis of cases according to demographic characteristics and health facility (HF) type. RESULTS: Of 3481 cases of EVD, 579 (16.6%) were NIs, 332 of which occurred in women (57.3%). Patients and visitors accounted for 419 cases (72.4%), of which 79 (18.9%) were aged from 6 to ≤ 18 years and 108 (25.8%) were aged ≤ 5 years. Health workers (HWs) accounted for the remaining 160 (27.6%) NI cases. Case fatality rate (CFR) among HWs (66/160; 41.3%) was significantly lower than among patients and visitors (292/419; 69.7%) (p < 0.001). CFR was higher among those aged 6-18 years (54/79; 68.4%) and ≤ 5 years (89/108; 82.4%). Referral HFs (> 39 beds) had the highest prevalence of EVD NI (148/579; 25.6%). Among HFs with at least one case of NI, 50.0% (98/196) were privately owned. CONCLUSIONS: nurses and traditional healers should be targeted for IPC training, and supportive supervision provided to HFs to mitigate EVD transmission. |
Human Melioidosis Caused by Novel Transmission of Burkholderia pseudomallei from Freshwater Home Aquarium, United States
Dawson P , Duwell MM , Elrod MG , Thompson RJ , Crum DA , Jacobs RM , Gee JE , Kolton CB , Liu L , Blaney DD , Thomas LG , Sockwell D , Weiner Z , Bower WA , Hoffmaster AR , Salzer JS . Emerg Infect Dis 2021 27 (12) 3030-3035 Nearly all cases of melioidosis in the continental United States are related to international travel to areas to which Burkholderia pseudomallei, the bacterium that causes melioidosis, is endemic. We report the diagnosis and clinical course of melioidosis in a patient from the United States who had no international travel history and the public health investigation to determine the source of exposure. We tested environmental samples collected from the patient's home for B. pseudomallei by PCR and culture. Whole-genome sequencing was conducted on PCR-positive environmental samples, and results were compared with sequences from the patient's clinical specimen. Three PCR-positive environmental samples, all collected from a freshwater home aquarium that had contained imported tropical fish, were a genetic match to the clinical isolate from the patient. This finding suggests a novel route of exposure and a potential for importation of B. pseudomallei, a select agent, into the United States from disease-endemic areas. |
Genomic Diversity of Burkholderia pseudomallei Isolates, Colombia.
Duarte C , Montufar F , Moreno J , Sánchez D , Rodríguez JY , Torres AG , Morales S , Bautista A , Huertas MG , Myers JN , Gulvik CA , Elrod MG , Blaney DD , Gee JE . Emerg Infect Dis 2021 27 (2) 655-658 We report an analysis of the genomic diversity of isolates of Burkholderia pseudomallei, the cause of melioidosis, recovered in Colombia from routine surveillance during 2016-2017. B. pseudomallei appears genetically diverse, suggesting it is well established and has spread across the region. |
Development of the Global Mycetoma Working Group
Traxler RM , Beer KD , Blaney DD , van de Sande WWJ , Fahal AH , Asiedu KB , Bower WA , Chiller T . Trans R Soc Trop Med Hyg 2020 115 (4) 437-440 The Global Mycetoma Working Group (GMWG) was formed in January 2018 in response to the declaration of mycetoma as a neglected tropical disease (NTD) by the World Health Assembly. The aim of the working group is to connect experts and public health practitioners around the world to accelerate mycetoma prevention activities and reduce the impact of mycetoma on patients, healthcare providers and society in the endemic regions. The working group has made tangible contributions to mycetoma programming, awareness and coordination among scientists, clinicians and public health professionals. The group's connectivity has enabled rapid response and review of NTD documents in development, has created a network of public health professionals to provide regional mycetoma expertise and has enabled mycetoma to be represented within broader NTD organizations. The GMWG will continue to serve as a hub for networking and building collaborations for the advancement of mycetoma clinical management and treatment, research and public health programming. |
Melioidosis in a resident of Texas with no recent travel history, United States
Cossaboom CM , Marinova-Petkova A , Strysko J , Rodriguez G , Maness T , Ocampo J , Gee JE , Elrod MG , Gulvik CA , Liu L , Bower WA , Hoffmaster AR , Blaney DD , Salzer JS , Yoder JS , Mattioli MC , Sidwa TJ , Ringsdorf L , Morrow G , Ledezma E , Kieffer A . Emerg Infect Dis 2020 26 (6) 1295-1299 To our knowledge, environmental isolation of Burkholderia pseudomallei, the causative agent of melioidosis, from the continental United States has not been reported. We report a case of melioidosis in a Texas resident. Genomic analysis indicated that the isolate groups with B. pseudomallei isolates from patients in the same region, suggesting possible endemicity to this region. |
Global knowledge gaps in acute febrile illness etiologic investigations: A scoping review
Rhee C , Kharod GA , Schaad N , Furukawa NW , Vora NM , Blaney DD , Crump JA , Clarke KR . PLoS Negl Trop Dis 2019 13 (11) e0007792 BACKGROUND: Acute febrile illness (AFI), a common reason for people seeking medical care globally, represents a spectrum of infectious disease etiologies with important variations geographically and by population. There is no standardized approach to conducting AFI etiologic investigations, limiting interpretation of data in a global context. We conducted a scoping review to characterize current AFI research methodologies, identify global research gaps, and provide methodological research standardization recommendations. METHODOLOGY/FINDINGS: Using pre-defined terms, we searched Medline, Embase, and Global Health, for publications from January 1, 2005-December 31, 2017. Publications cited in previously published systematic reviews and an online study repository of non-malarial febrile illness etiologies were also included. We screened abstracts for publications reporting on human infectious disease, aimed at determining AFI etiology using laboratory diagnostics. One-hundred ninety publications underwent full-text review, using a standardized tool to collect data on study characteristics, methodology, and laboratory diagnostics. AFI case definitions between publications varied: use of self-reported fever as part of case definitions (28%, 53/190), fever cut-off value (38.0 degrees C most commonly used: 45%, 85/190), and fever measurement site (axillary most commonly used: 19%, 36/190). Eighty-nine publications (47%) did not include exclusion criteria, and inclusion criteria in 13% (24/190) of publications did not include age group. No publications included study settings in Southern Africa, Micronesia & Polynesia, or Central Asia. We summarized standardized reporting practices, specific to AFI etiologic investigations that would increase inter-study comparability. CONCLUSIONS: Wider implementation of standardized AFI reporting methods, with multi-pathogen disease detection, could improve comparability of study findings, knowledge of the range of AFI etiologies, and their contributions to the global AFI burden. These steps can guide resource allocation, strengthen outbreak detection and response, target prevention efforts, and improve clinical care, especially in resource-limited settings where disease control often relies on empiric treatment. PROSPERO: CRD42016035666. |
Melioidosis after Hurricanes Irma and Maria, St. Thomas/St. John District, US Virgin Islands, October 2017
Guendel I , Ekpo LL , Hinkle MK , Harrison CJ , Blaney DD , Gee JE , Elrod MG , Boyd S , Gulvik CA , Liu L , Hoffmaster AR , Ellis BR , Hunte-Ceasar T , Ellis EM . Emerg Infect Dis 2019 25 (10) 1952-1955 We report 2 cases of melioidosis in women with diabetes admitted to an emergency department in the US Virgin Islands during October 2017. These cases emerged after Hurricanes Irma and Maria and did not have a definitively identified source. Poor outcomes were observed when septicemia and pulmonary involvement were present. |
Correlation between Etest and reference broth microdilution for antimicrobial susceptibility testing of Burkholderia pseudomallei
Lonsway DR , Elrod MG , Kendrick N , Tiller R , Sullivan MM , Edwards JR , Blaney DD , Karlsson M . Microb Drug Resist 2019 26 (4) 311-318 A three-center study was performed to see if Etest gradient diffusion minimum inhibitory concentration (MIC) methodology correlated with reference broth microdilution (BMD) for antimicrobial susceptibility testing of Burkholderia pseudomallei against six antimicrobial agents known to be usually effective against B. pseudomallei. This study was performed to assist in the decision-making process for possible deployment of the Etest method for antimicrobial susceptibility testing of B. pseudomallei into several regional public health laboratories in the United States. Three laboratories each tested a challenge set of 30 genotypically diverse isolates collected from 15 different countries. MICs were performed by both Etest gradient diffusion and reference BMD for amoxicillin/clavulanate, ceftazidime, doxycycline, imipenem, tetracycline, and trimethoprim/sulfamethoxazole. Etest results for amoxicillin/clavulanate, ceftazidime, doxycycline, and imipenem correlated well with reference BMD by both category interpretation (>/=97%) and essential agreement of MIC (>/=93%). Tetracycline and trimethoprim/sulfamethoxazole Etests yielded poor correlation with BMD by category interpretation (80%) and essential agreement (70%), respectively. In conclusion, Etest gradient diffusion represents a valid option for antimicrobial susceptibility testing of B. pseudomallei against amoxicillin/clavulanate, ceftazidime, doxycycline, and imipenem. Tetracycline and trimethoprim/sulfamethoxazole Etest results showed some concerning lack of correlation with the corresponding reference BMD results. |
Differentiating New from Newly Detected: Melioidosis in Yap, Federated States of Micronesia.
Nolen LD , Lirow E , Gee JE , Elrod MG , Kolton CB , Liu L , Bower WA , Person MK , Marfel M , Blaney DD . Am J Trop Med Hyg 2019 101 (2) 323-327 Melioidosis is a bacterial infection caused by exposure to water or soil that contains Burkholderia pseudomallei (Bp). Burkholderia pseudomallei is endemic to many tropical and subtropical areas of the world. In 2013, the first case of melioidosis was recognized in Yap, the Federated States of Micronesia. Six additional cases were identified in the subsequent 3 years. An investigation was initiated to understand the epidemiology of melioidosis in Yap. Serum from family and community members of the identified cases were tested for antibodies to Bp. Archived serum from a 2007 Zika serosurvey were also tested for antibodies to Bp. Sequencing of bacterial isolates was performed to understand bacterial phylogeny. Soil and water were tested for the presence of Bp in the environment by culture and PCR. None of the affected patients had a history of travel to melioidosis-endemic countries. Two of the 34 (5.8%) samples from the field investigation and 67 (11.7%) of the historical samples demonstrated serologic evidence of prior Bp exposure. No Bp were detected from 30 soil or water samples. Genotype analysis showed highly related Bp isolates that were unique to Yap. Melioidosis is likely to be endemic to Yap; however, it has only recently been recognized by the clinical community in country. Further investigation is needed to understand the local sites that harbor Bp and represent the highest risk to the community. |
CNS melioidosis in a traveler returning from Cabo, Mexico
Donahue MA , Newcomb G , Spinella S , Prasad P , Liesveld J , Egan CT , Smith GL , Newman AP , Bower WA , Blaney DD , Gee JE , Elrod MG , Chuang S , Babu TM . Open Forum Infect Dis 2019 6 (2) ofz005 Melioidosis is caused by the gram-negative bacillus Burkholderia pseudomallei, endemic to northern Australia and Southeast Asia. We present a patient who traveled to Mexico, returned to the United States, and developed progressive manifestations of melioidosis, culminating as central nervous system disease. Standard therapy was contraindicated, and a prolonged intensive phase was employed. |
A call to action for mycetoma
Beer KD , Blaney DD , Kadzik M , Asiedu KB , Shieh WJ , Bower W , Jackson BR , Walke H , Chiller T . Curr Fungal Infect Rep 2018 12 (3) 99-104 Purpose of Review: Here, we discuss the current needs and priorities for mycetoma control and prevention, highlight lessons learned from leprosy and podoconiosis, and motivate an urgent need to accelerate progress toward reducing the burden of mycetoma in endemic areas. Recent Findings: In 2015, the World Health Assembly (WHA) added mycetoma, a progressively debilitating disease caused by fungi and bacteria, to the World Health Organization (WHO) list of priority neglected tropical diseases (NTDs). Designation of other diseases as NTDs has raised awareness, enabled global partnerships, and advanced the capacity to combat disease through integrated programming. Although key mycetoma etiologic agents have been identified, many questions remain and mycetoma may similarly benefit from NTD designation. Summary: In collaboration with experts at WHO and elsewhere, we formed a global mycetoma working group to connect partners from a variety of sectors and specialties. We envision that this group will evolve into a formalized partnership that can prioritize strategic planning, advocacy, and research needs, identify funding sources, and coordinate activities related to mycetoma and other NTDs affecting the skin. The experiences gained from other NTDs can help to guide the global mycetoma working group's activities to better address the goals set forth in the WHA resolution. |
Public health response to an imported case of canine melioidosis
Ryan CW , Bishop K , Blaney DD , Britton SJ , Cantone F , Egan C , Elrod MG , Frye CW , Maxted AM , Perkins G . Zoonoses Public Health 2018 65 (4) 420-424 Melioidosis in humans presents variably as fulminant sepsis, pneumonia, skin infection and solid organ abscesses. It is caused by Burkholderia pseudomallei, which in the United States is classified as a select agent, with "potential to pose a severe threat to both human and animal health, to plant health or to animal and plant products" (Federal Select Agent Program, http://www.selectagents.gov/, accessed 22 September 2016). Burkholderia pseudomallei is found in soil and surface water in the tropics, especially South-East Asia and northern Australia, where melioidosis is endemic. Human cases are rare in the United States and are usually associated with travel to endemic areas. Burkholderia pseudomallei can also infect animals. We describe a multijurisdictional public health response to a case of subclinical urinary B. pseudomallei infection in a dog that had been adopted into upstate New York from a shelter in Thailand. Investigation disclosed three human contacts with single, low-risk exposures to the dog's urine at his residence, and 16 human contacts with possible exposure to his urine or culture isolates at a veterinary hospital. Contacts were offered various combinations of symptom/fever monitoring, baseline and repeat B. pseudomallei serologic testing, and antibiotic post-exposure prophylaxis, depending on the nature of their exposure and their personal medical histories. The dog's owner accepted recommendations from public health authorities and veterinary clinicians for humane euthanasia. A number of animal rescue organizations actively facilitate adoptions into the United States of shelter dogs from South-East Asia. This may result in importation of B. pseudomallei into almost any community, with implications for human and animal health. |
Elizabethkingia in children: A comprehensive review of symptomatic cases reported from 1944-2017
Dziuban EJ , Franks J , So M , Peacock G , Blaney DD . Clin Infect Dis 2017 67 (1) 144-149 Elizabethkingia species often exhibit extensive antibiotic resistance and result in high morbidity and mortality, yet no systematic reviews exist that thoroughly characterize and quantify concerns for infected infants and children. We performed a review of literature and identified an initial 902 articles; 96 articles reporting 283 pediatric cases met our inclusion criteria and were subsequently reviewed. Case reports spanned 28 countries and ranged from 1944 to 2017. Neonatal meningitis remains the most common presentation of this organism in children, along with a range of other clinical manifestations. The majority of reported cases occurred as isolated cases, rather than within outbreaks. Mortality was high but has decreased in recent years, although neurologic sequelae among survivors remains concerning. Child outcomes can be improved through effective prevention measures and early identification and treatment of infected patients. |
Notes from the Field: Investigation of Elizabethkingia anophelis Cluster - Illinois, 2014-2016.
Navon L , Clegg WJ , Morgan J , Austin C , McQuiston JR , Blaney DD , Walters MS , Moulton-Meissner H , Nicholson A . MMWR Morb Mortal Wkly Rep 2016 65 (48) 1380-1381 Elizabethkingia spp., formerly known as Flavobacterium and Chryseobacterium, are multidrug-resistant, Gram negative bacilli found in the environment that can cause health care–associated outbreaks (1). Elizabethkingia meningoseptica was first identified by Elizabeth King in 1959 as a cause of meningitis outbreaks among hospitalized newborns (2). Elizabethkingia anophelis (EKA) was first identified in 2011 from the midgut of a mosquito (3); a recent series of cases from Hong Kong indicate that EKA health care–associated infections cause significant morbidity and have a high case-fatality rate (23.5%) (4). | In February 2016, the Wisconsin Department of Health Services notified the Illinois Department of Public Health (IDPH) and other neighboring health departments of an ongoing outbreak of EKA among Wisconsin residents. To determine if Illinois had related cases, IDPH sent memos on February 10 and March 29, 2016 to Illinois health care providers, infection preventionists and laboratories, requesting all available isolates of Elizabethkingia spp. dating back 2 years, to January 1, 2014. Twelve isolates from 11 patients were sent to CDC for testing; specimen collection dates ranged from June 23, 2014 to March 31, 2016. | On April 14, 2016, CDC informed IDPH that all submitted isolates were identified as EKA and that a genetic cluster (11 isolates from 10 patients) distinct from the Wisconsin outbreak strain had been identified, based on pulsed-field gel electrophoresis (PFGE) and whole genome sequencing (WGS). The eleven isolates were an average of 39.6 single nucleotide polymorphisms (SNPs) apart by WGS, with a range of 9–60 SNPs in the core of the genomic sequence shared across the isolates (80% of the genome). This SNP range corresponded to PFGE patterns with zero (indistinguishable) to three (closely related) band pattern differences. By comparison, some historic EKA isolates tested by CDC have differed by approximately 1,000 SNPs, with the more distantly related EKA strains differing by tens of thousands of SNPs. Phylogenetic analysis followed by bootstrapping statistical analysis provided strong support that these Illinois isolates clustered together and were genetically distinct from other EKA isolates submitted to CDC. |
A review of melioidosis cases in the Americas
Benoit TJ , Blaney DD , Doker TJ , Gee JE , Elrod MG , Rolim DB , Inglis TJ , Hoffmaster AR , Bower WA , Walke HT . Am J Trop Med Hyg 2015 93 (6) 1134-9 Melioidosis is a bacterial infection caused by Burkholderia pseudomallei, a gram-negative saprophytic bacillus. Cases occur sporadically in the Americas with an increasing number of cases observed among people with no travel history to endemic countries. To better understand the incidence of the disease in the Americas, we reviewed the literature, including unpublished cases reported to the Centers for Disease Control and Prevention. Of 120 identified human cases, occurring between 1947 and June 2015, 95 cases (79%) were likely acquired in the Americas; the mortality rate was 39%. Burkholderia pseudomallei appears to be widespread in South, Central, and North America. |
Melioidosis cases and selected reports of occupational exposures to Burkholderia pseudomallei - United States, 2008-2013
Benoit TJ , Blaney DD , Gee JE , Elrod MG , Hoffmaster AR , Doker TJ , Bower WA , Walke HT . MMWR Surveill Summ 2015 64 1-9 PROBLEM/CONDITION: Melioidosis is an infection caused by the Gram-negative bacillus Burkholderia pseudomallei, which is naturally found in water and soil in areas endemic for melioidosis. Infection can be severe and sometimes fatal. The federal select agent program designates B. pseudomallei as a Tier 1 overlap select agent, which can affect both humans and animals. Identification of B. pseudomallei and all occupational exposures must be reported to the Federal Select Agent Program immediately (i.e., within 24 hours), whereas states are not required to notify CDC's Bacterial Special Pathogens Branch (BSPB) of human infections. PERIOD COVERED: 2008-2013. DESCRIPTION OF SYSTEM: The passive surveillance system includes reports of suspected (human and animal) melioidosis cases and reports of incidents of possible occupational exposures. Reporting of suspected cases to BSPB is voluntary. BSPB receives reports of occupational exposure in the context of a request for technical consultation (so that the system does not include the full complement of the mandatory and confidential reporting to the Federal Select Agent Program). Reporting sources include state health departments, medical facilities, microbiologic laboratories, or research facilities. Melioidosis cases are classified using the standard case definition adopted by the Council of State and Territorial Epidemiologists in 2011. In follow up to reports of occupational exposures, CDC often provides technical assistance to state health departments to identify all persons with possible exposures, define level of risk, and provide recommendations for postexposure prophylaxis and health monitoring of exposed persons. RESULTS: During 2008-2013, BSPB provided technical assistance to 20 U.S. states and Puerto Rico involving 37 confirmed cases of melioidosis (34 human cases and three animal cases). Among those with documented travel history, the majority of reported cases (64%) occurred among persons with a documented travel history to areas endemic for melioidosis. Two persons did not report any travel outside of the United States. Separately, six incidents of possible occupational exposure involving research activities also were reported to BSPB, for which two incidents involved occupational exposures and no human infections occurred. Technical assistance was not required for these incidents because of risk-level (low or none) and appropriate onsite occupational safety response. Of the 261 persons at risk for occupational exposure to B. pseudomallei while performing laboratory diagnostics, 43 (16%) persons had high-risk exposures, 130 (50%) persons had low-risk exposures, and 88 (34%) persons were classified as having undetermined or unknown risk. INTERPRETATION: A small number of U.S. cases of melioidosis have been reported among persons with no travel history outside of the United States, whereas the majority of cases have occurred in persons with a travel history to areas endemic for melioidosis. If the number of travelers continues to increase in countries where the disease is endemic, the likelihood of identifying imported melioidosis cases in the United States might also increase. PUBLIC HEALTH ACTIONS: Reporting of melioidosis cases can improve the ability to monitor the incidence and prevalence of the disease in the United States. To improve prevention and control of melioidosis, CDC recommends that 1) physicians consider melioidosis in the differential diagnosis of patients with acute febrile illnesses, risk factors for melioidosis, and compatible travel or exposure history; 2) personnel at risk for occupational exposure (e.g. laboratory workers or researchers) follow proper safety practices, which includes using appropriate personal protective equipment when working with unknown pathogens; and 3) all possible occupational exposures to B. pseudomallei be reported voluntarily to BSPB. |
Melioidosis Diagnostic Workshop, 2013
Hoffmaster AR , AuCoin D , Baccam P , Baggett HC , Baird R , Bhengsri S , Blaney DD , Brett PJ , Brooks TJ , Brown KA , Chantratita N , Cheng AC , Dance DA , Decuypere S , Defenbaugh D , Gee JE , Houghton R , Jorakate P , Lertmemongkolchai G , Limmathurotsakul D , Merlin TL , Mukhopadhyay C , Norton R , Peacock SJ , Rolim DB , Simpson AJ , Steinmetz I , Stoddard RA , Stokes MM , Sue D , Tuanyok A , Whistler T , Wuthiekanun V , Walke HT . Emerg Infect Dis 2015 21 (2) Melioidosis is a severe disease that can be difficult to diagnose because of its diverse clinical manifestations and a lack of adequate diagnostic capabilities for suspected cases. There is broad interest in improving detection and diagnosis of this disease not only in melioidosis-endemic regions but also outside these regions because melioidosis may be underreported and poses a potential bioterrorism challenge for public health authorities. Therefore, a workshop of academic, government, and private sector personnel from around the world was convened to discuss the current state of melioidosis diagnostics, diagnostic needs, and future directions. |
Contact investigation of melioidosis cases reveals regional endemicity in Puerto Rico
Doker TJ , Sharp TM , Rivera-Garcia B , Perez-Padilla J , Benoit TJ , Ellis EM , Elrod MG , Gee JE , Shieh WJ , Beesley CA , Ryff KR , Traxler RM , Galloway RL , Haberling DL , Waller LA , Shadomy SV , Bower WA , Hoffmaster AR , Walke HT , Blaney DD . Clin Infect Dis 2014 60 (2) 243-50 BACKGROUND: Melioidosis results from infection with Burkholderia pseudomallei, and is associated with case-fatality rates up to 40%. Early diagnosis and treatment with appropriate antimicrobials can improve survival rates. Fatal and non-fatal melioidosis cases were identified in Puerto Rico in 2010 and 2012, respectively, which prompted contact investigations to identify risk factors for infection and evaluate endemicity. METHODS: Questionnaires were administered and serum specimens were collected from co-workers, neighborhood contacts within 250 meters of both patients' residences, and injection drug use (IDU) contacts of the 2012 patient. Serum specimens were tested for evidence of prior exposure to B. pseudomallei by indirect hemagglutination assay. Neighborhood seropositivity results guided soil sampling to isolate B. pseudomallei. RESULTS: Serum specimens were collected from contacts of the 2010 (n=51) and 2012 (n=60) patients, respectively. No co-workers had detectable anti-B. pseudomallei antibody, whereas seropositive results among neighborhood contacts was 5% (n=2) for the 2010 patient and 23%(n=12) for the 2012 patient, as well as 2 of 3 IDU contacts for the 2012 case. Factors significantly associated with seropositivity were having skin wounds, sores, or ulcers (OR=4.6; 95% CI: 1.2-17.8) and IDU (OR=18.0; 95% CI: 1.6-194.0). B. pseudomallei was isolated from soil collected in the neighborhood of the 2012 patient. CONCLUSIONS: Taken together, isolation of B. pseudomallei from a soil sample and high seropositivity among patient contacts suggest at least regional endemicity of melioidosis in Puerto Rico. Increased awareness of melioidosis is needed to enable early case identification and early initiation of appropriate antimicrobial therapy. |
Fatal Burkholderia pseudomallei infection initially reported as a Bacillus species, Ohio, 2013
Doker TJ , Quinn CL , Salehi ED , Sherwood JJ , Benoit TJ , Elrod MG , Gee JE , Shadomy SV , Bower WA , Hoffmaster AR , Walke HT , Blaney DD , DiOrio MS . Am J Trop Med Hyg 2014 91 (4) 743-6 A fatal case of melioidosis was diagnosed in Ohio one month after culture results were initially reported as a Bacillus species. To identify a source of infection and assess risk in patient contacts, we abstracted patient charts; interviewed physicians and contacts; genetically characterized the isolate; performed a Burkholderia pseudomallei antibody indirect hemagglutination assay on household contacts and pets to assess seropositivity; and collected household plant, soil, liquid, and insect samples for culturing and real-time polymerase chain reaction testing. Family members and pets tested were seronegative for B. pseudomallei. Environmental samples were negative by real-time polymerase chain reaction and culture. Although the patient never traveled internationally, the isolate genotype was consistent with an isolated that originated in Southeast Asia. This investigation identified the fifth reported locally acquired non-laboratory melioidosis case in the contiguous United States. Physicians and laboratories should be aware of this potentially emerging disease and refer positive cultures to a Laboratory Response Network laboratory. |
Burkholderia pseudomallei isolates in 2 pet iguanas, California, USA
Zehnder AM , Hawkins MG , Koski MA , Lifland B , Byrne BA , Swanson AA , Rood MP , Gee JE , Elrod MG , Beesley CA , Blaney DD , Ventura J , Hoffmaster AR , Beeler ES . Emerg Infect Dis 2014 20 (2) 304-6 Burkholderia pseudomallei, the causative agent of melioidosis, was isolated from abscesses of 2 pet green iguanas in California, USA. The international trade in iguanas may contribute to importation of this pathogen into countries where it is not endemic and put persons exposed to these animals at risk for infection. |
Lethal factor and anti-protective antigen IgG levels associated with inhalation anthrax, Minnesota, USA
Sprenkle MD , Griffith J , Marinelli W , Boyer AE , Quinn CP , Pesik NT , Hoffmaster A , Keenan J , Juni BA , Blaney DD . Emerg Infect Dis 2014 20 (2) 310-4 Bacillus anthracis was identified in a 61-year-old man hospitalized in Minnesota, USA. Cooperation between the hospital and the state health agency enhanced prompt identification of the pathogen. Treatment comprising antimicrobial drugs, anthrax immune globulin, and pleural drainage led to full recovery; however, the role of passive immunization in anthrax treatment requires further evaluation. |
Review of brucellosis cases from laboratory exposures in the United States, 2008-2011, and improved strategies for disease prevention
Traxler RM , Guerra MA , Morrow MG , Haupt T , Morrison J , Saah JR , Smith C , Williams C , Fleischauer AT , Lee PA , Stanek D , Trevino-Garrison I , Franklin P , Oakes P , Hand S , Shadomy SV , Blaney DD , Lehman MW , Benoit TJ , Stoddard RA , Tiller RV , De BK , Bower W , Smith TL . J Clin Microbiol 2013 51 (9) 3132-6 Five laboratory-acquired brucellosis (LAB) cases that occurred in the United States between 2008 and 2011 are presented. The Centers for Disease Control and Prevention (CDC) reviewed the recommendations published in 2008 and the published literature to identify strategies to further prevent LAB. The improved prevention strategies are described. |
Epidemiology and investigation of melioidosis, Southern Arizona
Stewart T , Engelthaler DM , Blaney DD , Tuanyok A , Wangsness E , Smith TL , Pearson T , Komatsu KK , Keim P , Currie BJ , Levy C , Sunenshine R . Emerg Infect Dis 2011 17 (7) 1286-1288 Burkholderia pseudomallei is a bacterium endemic to Southeast Asia and northern Australia, but it has not been found to occur endemically in the United States. We report an ostensibly autochthonous case of melioidosis in the United States. Despite an extensive investigation, the source of exposure was not identified. |
Use of alcohol-based hand sanitizers as a risk factor for norovirus outbreaks in long-term care facilities in northern New England: December 2006 to March 2007
Blaney DD , Daly ER , Kirkland KB , Tongren JE , Tassler Kelso P , Talbot EA . Am J Infect Control 2011 39 (4) 296-301 BACKGROUND: During December 2006 to March 2007, a substantial increase in norovirus illnesses was noted in northern New England. We sought to identify institutional risk factors for norovirus outbreaks in northern New England long-term care facilities (LTCFs). METHODS: State health departments in Maine, New Hampshire, and Vermont distributed surveys to infection preventionists at all LTCFs in their respective states. We collected information regarding facility attributes, routine staff use of alcohol-based hand sanitizer (ABHS) versus soap and water, facility cleaning practices, and occurrence of any acute gastroenteritis outbreaks during December 2006 to March 2007. Norovirus confirmation was conducted in public health laboratories. Data were analyzed with univariate and logistic regression methods. RESULTS: Of 160 facilities, 91 (60%) provided survey responses, with 61 facilities reporting 73 outbreaks; 29 were confirmed norovirus. Facilities reporting that staff were equally or more likely to use ABHS than soap and water for routine hand hygiene had higher odds of an outbreak than facilities with staff less likely to use ABHS (adjusted odds ratio, 6.06; 95% confidence interval: 1.44-33.99). CONCLUSION: This study suggests that preferential use of ABHS over soap and water for routine hand hygiene might be associated with increased risk of norovirus outbreaks in LTCFs. |
Blastomycosis in man after kinkajou bite
Harris JR , Blaney DD , Lindsley MD , Zaki SR , Paddock CD , Drew CP , Johnson AJ , Landau D , Vanderbush J , Baker R . Emerg Infect Dis 2011 17 (2) 268-70 We report transmission of Blastomyces dermatitidis fungal infection from a pet kinkajou to a man. When treating a patient with a recalcitrant infection and a history of an animal bite, early and complete animal necropsy and consideration of nonbacterial etiologies are needed. |
Establishing the baseline height and weight status of New Hampshire Head Start children, 2007-2008
Blaney DD , Flynn RT , Martin NR , Anderson L . NHSA Dialog 2010 13 (4) 217-224 We report on a standardized survey of height and weight status of children attending the New Hampshire Head Start Program during the 2007-2008 school year. Baseline prevalence estimates of overweight and obesity are needed for obesity prevention activities and intervention. | We selected a random one-stage cluster sample and screened 629 children ages 3-5 years attending 27 of 45 Head Start sites. Survey participants underwent standardized height and weight measurements. We recorded sex and date of birth and calculated body mass index (BMI). For each participating site, we determined rural or urban status. We assessed prevalence of overweight and obesity for the survey sample and the statistical significance of differences between subgroups. Prevalence of overweight (BMI ≥ 85th and < 95th percentile) was 18.4% (95% confidence interval [CI]: 16.5%-20.4%), and prevalence of obesity (BMI ≥ 95th percentile) was 18.1% (95% CI: 16.1%-20.2%). No statistically significant differences were noted by age or sex. Children attending urban sites were found to be significantly more likely obese when compared with children attending rural sites. Children enrolled in New Hampshire Head Start demonstrate an increased prevalence of overweight and obesity compared with the general population. There are marked differences in the prevalence of obesity by urban/rural sites. Specific interventions for Head Start children are warranted. |
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