Last data update: Apr 18, 2025. (Total: 49119 publications since 2009)
Records 1-24 (of 24 Records) |
Query Trace: McKenna J[original query] |
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An investigation of an outbreak of Salmonella Typhimurium infections linked to cantaloupe – United States, 2022
Seelman Federman S , Jenkins E , Wilson C , DeLaGarza A , Schwensohn C , Schneider B , Nsubuga J , Literman R , Wellman A , Whitney BM , Bell RL , Harris-Garner K , McKenna C , Brillhart D , Cross M , Rueber K , Schlichte T , Oni K , Adams J , Crosby AJ , Bazaco MC , Gieraltowski L , Nolte K , Viazis S . Food Control 2024 166 ![]() ![]() In 2022, the Food and Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC), and state health and regulatory partners investigated an outbreak of Salmonella enterica serovar Typhimurium infections linked to cantaloupes from southwest Indiana, resulting in 87 ill persons and 32 hospitalizations reported in 11 states. Epidemiologic and traceback evidence confirmed cantaloupe as the vehicle for these infections. Based on records collected by FDA, traceback of cantaloupe exposures for 14 ill people converged on a packing house in southwest Indiana, which supplied cantaloupe to eight of the 11 points of service where ill people purchased cantaloupe. Salmonella isolates were recovered from environmental samples collected by FDA from three growers and a packing house in southwest Indiana. Whole genome sequencing analyses of these isolates found that isolates collected from one grower matched the Salmonella Typhimurium outbreak strain, and samples collected from the other two growers and the packing house matched a 2020 Salmonella Newport outbreak strain. State and federal public health and agricultural partners identified potential conditions and practices that could have possibly resulted in the contamination of cantaloupe, including the presence of Salmonella spp. in on-farm, post-harvest, and off-farm environments. This is the third outbreak of salmonellosis confirmed to be linked to melons, sourced from southwest Indiana in the last decade. The 2012, 2020, and 2022 outbreaks of reoccurring and persisting strains of Salmonella illustrate the need for additional efforts to determine the source and extent of environmental contamination in the melon growing region of southwest Indiana and for outreach and education to help promote practices to reduce contamination of melons. © 2024 |
Facilitators and barriers to adolescent participation in a TB clinical trial
Mangan JM , Hedges KNC , Salerno MM , Tatum K , Bouwkamp B , Frick MW , McKenna L , Muzanyi G , Engle M , Coetzee J , Yvetot J , Elskamp M , Lamunu D , Tizora MET , Namutamba D , Chaisson RE , Swindells S , Nahid P , Dorman SE , Kurbatova E . Int J Tuberc Lung Dis 2024 28 (5) 243-248 <sec id="st1"><title>BACKGROUND</title>The inclusion of adolescents in TB drug trials is essential for the development of safe, child-friendly regimens for the prevention and treatment of TB. TB Trials Consortium Study 31/AIDS Clinical Trials Group A5349 (S31/A5349) enrolled adolescents as young as 12 years old. We assessed investigator and coordinator described facilitators and barriers to adolescent recruitment, enrollment, and retention.</sec><sec id="st2"><title>METHODS</title>Interviews were conducted with six investigators from sites that enrolled adolescent participants and six investigators from non-enrolling sites. Additionally, two focus groups were conducted with study coordinators from enrolling sites and two focus groups with non-enrolling sites. Discussions were transcribed, analyzed, summarized, and summaries were reviewed by Community Research Advisors Group members and research group representatives for content validity.</sec><sec id="st3"><title>RESULTS</title>Investigators and coordinators attributed the successful enrollment of adolescents to the establishment and cultivation of external partnerships, flexibility to accommodate adolescents' schedules, staff engagement, recruitment from multiple locations, dedicated recruitment staff working onsite to access potential participants, creation of youth-friendly environments, and effective communications. Non-enrolling sites were mainly hindered by regulations. Suggestions for improvement in future trials focused on study planning and site preparations.</sec><sec id="st4"><title>CONCLUSION</title>Proactive partnerships and collaboration with institutions serving adolescents helped identify and reduce barriers to their inclusion in this trial.</sec>. |
Multistate outbreak of Salmonella Oranienburg infections linked to bulb onions imported from Mexico – United States, 2021
Mitchell MR , Kirchner M , Schneider B , McClure M , Neil KP , Madad A , Jemaneh T , Tijerina M , Nolte K , Wellman A , Neises D , Pightling A , Swinford A , Piontkowski A , Sexton R , McKenna C , Cornell J , Sandoval AL , Wang H , Bell RL , Stager C , Zamora Nava MC , Lara de la Cruz JL , Sánchez Córdova LI , Galván PR , Ortiz JA , Flowers S , Grisamore A , Gieraltowski L , Bazaco M , Viazis S . Food Control 2024 160 In 2021, the U.S. Food and Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC), and state and local health and regulatory partners investigated an outbreak of Salmonella enterica serovar Oranienburg infections linked to bulb onions from Mexico, resulting in 1040 illnesses and 260 hospitalizations across 39 states, the District of Columbia, and Puerto Rico. The Kansas Department of Agriculture recovered the outbreak strain of Salmonella Oranienburg from a sample of condiment collected from an ill person's home. The condiment was made with cilantro, lime, and onions, but, at the time of collection, there were no onions remaining in it. FDA conducted traceback investigations for white, yellow, and red bulb onions, cilantro, limes, tomatoes, and jalapeño peppers. Growers in the state of Chihuahua, Mexico, were identified as supplying the implicated onions that could account for exposure to onions for all illnesses included in the traceback investigation, but investigators could not determine a single source or route of contamination. FDA collected product and environmental samples across the domestic supply chain but did not recover the outbreak strain of Salmonella. Binational collaboration and information sharing supported Mexican authorities in collecting environmental samples from two packing plants and onion, water, and environmental samples from 15 farms and firms in Chihuahua, Mexico identified through FDA's traceback investigation, but did not recover the outbreak strain. Distributors of the implicated onions issued voluntary recalls of red, yellow, and white whole, fresh onions imported from the state of Chihuahua, Mexico. This outbreak showcased how investigators overcame significant traceback and epidemiologic challenges, the need for strengthening the ongoing collaboration between U.S. and Mexican authorities and highlighted the need for identifying practices across the supply chain that can help improve the safety of onions. © 2024 |
A Series of Papaya-Associated Salmonella Illness Outbreak Investigations in 2017 and 2019: A Focus on Traceback, Laboratory, and Collaborative Efforts.
Whitney BM , McClure M , Hassan R , Pomeroy M , Seelman SL , Singleton LN , Blessington T , Hardy C , Blankenship J , Pereira E , Davidson CN , Luo Y , Pettengill J , Curry P , McConnell T , Gieraltowski L , Schwensohn C , Basler C , Fritz K , McKenna C , Nieves K , Oliveira J , Sandoval AL , Crosby A , Williams D , Crocker K , Thomas D , Fulton T , Muetter L , Li L , Omoregie E , Holloman K , Brennan C , Thomas N , Barnes A , Viazis S . J Food Prot 2021 84 (11) 2002-2019 ![]() In 2017 and 2019, five outbreaks of infections from multiple strains of Salmonella linked to the consumption of whole, fresh Maradol papayas were reported in the United States, resulting in 325 ill persons. Traceback, laboratory, and epidemiologic evidence indicated papayas as the likely vehicle for each of these outbreaks and identified the source of papayas. State and U.S. Food and Drug Administration (FDA) laboratories recovered Salmonella from papaya samples from various points of distribution, including at import entry, and conducted serotyping, pulsed-field gel electrophoresis, and phylogenetic analyses of whole genome sequencing data. Federal and state partners led traceback investigations to determine the source of papayas. Four different suppliers of papayas were linked by traceback and laboratory results to five separate outbreaks of Salmonella infections associated with papayas. In 2017, multiple states tested papaya samples collected at retail, and Maryland and Virginia investigators recovered strains of Salmonella associated with one outbreak. FDA collected 183 papaya samples in 2017, and 11 samples yielded 62 isolates of Salmonella. Eleven serotypes of Salmonella were recovered from FDA papaya samples, and nine serotypes were closely related genetically by pulsed-field gel electrophoresis and whole genome sequencing to clinical isolates of four outbreaks, including the outbreak associated with positive state sample results. Four farms in Mexico were identified, and their names were released to the general public, retailers, and foreign authorities. In 2019, FDA collected 119 papaya samples, three of which yielded Salmonella; none yielded the 2019 outbreak strain. Investigators determined that papayas of interest had been sourced from a single farm in Campeche, Mexico, through traceback. This information was used to protect public health through public guidance, recalls, and import alerts and helped FDA collaborate with Mexican regulatory partners to enhance the food safety requirements for papayas imported from Mexico. |
A wandering missionary's burden: Persistent fever and progressive somnolence in a returning traveler
Yagnik KJ , Pezo-Salazar A , Rosenbaum D , Jaso JM , Cavuoti D , Nelson B , Chancey RJ , McKenna ML , Castellino LM . Open Forum Infect Dis 2021 8 (8) ofab377 Human African trypanosomiasis incidence has declined, but diagnosis remains difficult, especially in nonendemic areas. Our patient presented with fever, progressive lethargy, and weight loss for 5 months and had previously traveled to Ghana and Cameroon but had not been to areas with recently reported African trypanosomiasis. Extensive workup was negative, except for lymphocytic pleocytosis in cerebrospinal fluid; ultimately, a bone marrow aspiration revealed necrotizing granulomatous inflammation with 2 trypanosomes discovered on the aspirate smear, consistent with Trypanosoma brucei. The patient was treated with combination nifurtimox and eflornithine with full recovery. |
Prevalence of nonpharmacologic and pharmacologic therapies among noncancer chronic pain-associated ambulatory care visits, 2016
Strahan AE , McKenna C , Miller GF , Guy GP Jr . Am J Prev Med 2020 59 (4) e175-e177 An estimated 20.4% of US adults had chronic pain in 2016.1 Opioids are often prescribed for treating chronic pain, but evidence suggests that benefits may be limited, while harms may include addiction, overdose, and death.2,3 The 2016 CDC Guideline for Prescribing Opioids for Chronic Pain (CDC Guideline) recommends non-pharmacologic and non-opioid pharmacologic therapies as the preferred therapies for chronic pain.3 Prior research has examined opioid and non-opioid pharmacologic therapies,4 little is known about how non-pharmacologic therapies are utilized for chronic pain. This study examined the prevalence of non-pharmacologic and pharmacologic (opioid and non-opioid) therapies among ambulatory care visits with a non-cancer chronic pain associated primary diagnosis. |
Treatment of drug-resistant tuberculosis. An official ATS/CDC/ERS/IDSA Clinical Practice Guideline
Nahid P , Mase SR , Migliori GB , Sotgiu G , Bothamley GH , Brozek JL , Cattamanchi A , Cegielski JP , Chen L , Daley CL , Dalton TL , Duarte R , Fregonese F , Horsburgh CR Jr , Ahmad Khan F , Kheir F , Lan Z , Lardizabal A , Lauzardo M , Mangan JM , Marks SM , McKenna L , Menzies D , Mitnick CD , Nilsen DM , Parvez F , Peloquin CA , Raftery A , Schaaf HS , Shah NS , Starke JR , Wilson JW , Wortham JM , Chorba T , Seaworth B . Am J Respir Crit Care Med 2019 200 (10) e93-e142 Background: The American Thoracic Society, U.S. Centers for Disease Control and Prevention, European Respiratory Society, and Infectious Diseases Society of America jointly sponsored this new practice guideline on the treatment of drug-resistant tuberculosis (DR-TB). The document includes recommendations on the treatment of multidrug-resistant TB (MDR-TB) as well as isoniazid-resistant but rifampin-susceptible TB.Methods: Published systematic reviews, meta-analyses, and a new individual patient data meta-analysis from 12,030 patients, in 50 studies, across 25 countries with confirmed pulmonary rifampin-resistant TB were used for this guideline. Meta-analytic approaches included propensity score matching to reduce confounding. Each recommendation was discussed by an expert committee, screened for conflicts of interest, according to the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology.Results: Twenty-one Population, Intervention, Comparator, and Outcomes questions were addressed, generating 25 GRADE-based recommendations. Certainty in the evidence was judged to be very low, because the data came from observational studies with significant loss to follow-up and imbalance in background regimens between comparator groups. Good practices in the management of MDR-TB are described. On the basis of the evidence review, a clinical strategy tool for building a treatment regimen for MDR-TB is also provided.Conclusions: New recommendations are made for the choice and number of drugs in a regimen, the duration of intensive and continuation phases, and the role of injectable drugs for MDR-TB. On the basis of these recommendations, an effective all-oral regimen for MDR-TB can be assembled. Recommendations are also provided on the role of surgery in treatment of MDR-TB and for treatment of contacts exposed to MDR-TB and treatment of isoniazid-resistant TB. |
Cancer mortality rates among US and foreign-born individuals: United States 2005-2014
Hallowell BD , Endeshaw M , McKenna MT , Senkomago V , Razzaghi H , Saraiya M . Prev Med 2019 126 105755 From 1970 to 2010 the foreign-born population in the United States has rapidly increased from 9.6 to 40.0 million individuals. Historically, differences in cancer rates have been observed between US-born and foreign-born individuals. However, comprehensive and up-to-date data on US cancer rates by birth place is lacking. To compare cancer mortality rates among foreign and US-born individuals, population-based cancer mortality data were obtained from the CDC's National Center for Health Statistics. Utilizing data recorded on death certificates, individuals were categorized as US-born or foreign-born. Annual population estimates were obtained from the American Community Survey. Age-adjusted mortality rates and rate ratios (RRs) for all cancer sites were calculated using SEER*Stat. A total of 5,670,535 deaths from malignant cancers were recorded in the US from 2005 to 2014 and 9% of deaths occurred among foreign-born individuals. Overall, foreign-born individuals had a 31% lower cancer mortality rate when compared to US-born individuals (Rate Ratio (RR): 0.69 (95% CI: 0.68-0.69)), and similar results were observed when stratifying by sex, race/ethnicity, age, and geographic region. However, foreign-born individuals did have significantly elevated cancer mortality rates for seven cancers sites, of which five were infection-related, including: nasopharynx (RR: 2.01), Kaposi Sarcoma (RR: 1.94), stomach (RR: 1.82), gallbladder (RR: 1.47), acute lymphocytic leukemia (RR: 1.27), liver and intrahepatic bile duct (RR: 1.24), and thyroid (RR: 1.22) cancers. Many of these deaths could be avoided through improved access to prevention, screening, and treatment services for immigrant populations in the US or in their country of origin. |
Cervical cancer death rates among U.S.- and foreign-born women: U.S., 2005-2014
Hallowell BD , Endeshaw M , McKenna MT , Senkomago V , Razzaghi H , Saraiya M . Am J Prev Med 2019 56 (6) 869-874 INTRODUCTION: Historically, foreign-born women in the U.S. are less likely to be screened and are more likely to die from cervical cancer when compared with their U.S.-born counterparts. In order to inform prevention efforts and reduce this health disparity, mortality data were obtained from the National Center for Health Statistics to describe cervical cancer mortality among U.S.- and foreign-born women. METHODS: Annual population estimates were obtained from the U.S. Census Bureau's American Community Survey from 2005 to 2014. From 2017 to 2018, age-adjusted mortality rates and rate ratios were calculated by nativity status, race/ethnicity, age, geographic region, and country of birth. RESULTS: From 2005 to 2014, a total of 5,924 deaths from cervical cancer were recorded among the foreign-born population, compared with 33,893 deaths among U.S.-born women. Overall, foreign-born women had a lower cervical cancer mortality rate when compared with the U.S.-born women (rate ratio=0.95, 95% CI=0.92, 0.97). However, older foreign-born women had significantly higher mortality rates compared with U.S.-born women: aged 65-79 years (rate ratio=1.15, 95% CI=1.09, 1.22) and >/=80 years (rate ratio=1.43, 95% CI=1.32, 1.55). Women born in Mexico had significantly elevated rates of cervical cancer mortality (rate ratio=1.35, 95% CI=1.27, 1.42) when compared with U.S.-born women. CONCLUSIONS: Efforts that work to increase cervical cancer screening access and guideline compliance might further reduce the cervical cancer deaths in the U.S., and the excess burden observed among older foreign-born women. |
Gastric cancer mortality rates among US and foreign-born persons: United States 2005-2014
Hallowell BD , Endeshaw M , Senkomago V , Razzaghi H , McKenna MT , Saraiya M . Gastric Cancer 2019 22 (5) 1081-1085 BACKGROUND: Historically, foreign-born individuals in the US have had an elevated risk of dying from gastric cancer when compared to US-born individuals. This is primarily due to factors that occur prior to their immigration to the US, including diet and underlying risk of H. pylori infection. METHODS: National mortality data from 2005 to 2014 were obtained from the CDC's National Center for Health Statistics. Annual population estimates were obtained from the US Census Bureau's American Community Survey for foreign-born and US-born persons. Age-adjusted gastric cancer mortality rates and rate ratios (RR) were calculated stratified by birth place, age, race/ethnicity, and geographic location. RESULTS: From 2005 to 2014, 111,718 deaths from malignant gastric cancer occurred in the US, of which 24,583 (22%) occurred among foreign-born individuals. Overall, foreign-born individuals had higher mortality rates compared with US-born individuals (RR 1.82; 95% CI 1.80, 1.85) and this difference remained after stratifying by sex, age, and geographic location. However, this finding was primarily driven by the low rate of gastric cancer mortality among US-born whites, with similar mortality rates observed among all other foreign-born and US-born groups. Gastric cancer mortality rates significantly decreased during the study period overall (AAPC - 2.50; 95% CI - 3.21, - 1.79) with significant declines observed among US-born (AAPC - 2.81; 95% CI - 3.55, - 2.07) and the foreign-born (AAPC - 2.53; 95% CI - 3.20, - 1.86) population. CONCLUSIONS: Efforts directed at reducing the prevalence of gastric cancer risk factors could help reduce the elevated burden observed among foreign-born individuals and US-born minority groups. |
Trends in liver cancer mortality in the United States: Dual burden among foreign- and US-born persons
Endeshaw M , Hallowell BD , Razzaghi H , Senkomago V , McKenna MT , Saraiya M . Cancer 2018 125 (5) 726-734 BACKGROUND: Since the mid-1980s, the burden of liver cancer in the United States has doubled, with 31,411 new cases and 24,698 deaths occurring in 2014. Foreign-born individuals may be more likely to die of liver cancer than individuals in the general US-born population because of higher rates of hepatitis B infection, a low socioeconomic position, and language barriers that limit the receipt of early cancer detection and effective treatment. METHODS: To determine whether liver cancer mortality rates were higher among foreign-born individuals versus US-born individuals in the United States, population-based cancer mortality data were obtained from the National Center for Health Statistics of the Centers for Disease Control and Prevention. Annual population estimates were obtained from the US Census Bureau's American Community Survey. Age-adjusted mortality rates and rate ratios (RRs) for liver cancer stratified by birth place were calculated, and the average annual percent change (AAPC) was used to evaluate trends. RESULTS: A total of 198,557 deaths from liver and intrahepatic bile duct cancer were recorded during 2005-2014, and 16% occurred among foreign-born individuals. Overall, foreign-born individuals had a 24% higher risk of liver cancer mortality than US-born individuals (RR, 1.24; 95% confidence interval [CI], 1.22-1.25). Foreign-born individuals did not have any significant changes in liver cancer mortality rates overall, but among US-born individuals, liver cancer mortality rates significantly increased (AAPC, 2.7; 95% CI, 2.1-3.3). CONCLUSIONS: Efforts that address the major risk factors for liver cancer are needed to help to alleviate the health disparities observed among foreign-born individuals and reverse the increasing trend observed in the US-born population. |
Geospatial mapping of early cases in multistate foodborne disease outbreaks: A strategy to expedite identification of contaminated imported produce, United States, 2006 to 2013
Chen Parker C , McKenna C , Wise M , Gezon C , Klontz KC . J Food Prot 2017 80 (11) 1821-1831 From 1998 to 2008, produce-related illness outbreaks accounted for roughly one-half of reported foodborne outbreaks in the United States. In 2013, Mexico accounted for approximately 50 and 30% of the monetary value of all vegetables and fruits, respectively, imported into the United States. We used historical import data to examine the correlation between the port of entry for five implicated produce vehicles from five multistate outbreaks and the geospatial and temporal distribution of illnesses in the corresponding outbreaks in the United States. For comparison, we analyzed the geospatial and temporal distribution of cases from two U.S. multistate outbreaks associated with domestically grown produce. The geospatial distribution of illnesses in the two outbreaks linked to domestic produce differed from that of the import-related produce outbreaks. The results of our pilot study suggest that geospatial distribution of early-onset cases may be used to identify ports of entry for produce likely to be responsible for causing multistate outbreaks in the United States and that targeted sampling of produce items from these ports of entry may expedite identification of an outbreak vehicle. |
Insights into Borrelia miyamotoi infection from an untreated case demonstrating relapsing fever, monocytosis and a positive C6 Lyme serology
Sudhindra P , Wang G , Schriefer ME , McKenna D , Zhuge J , Krause PJ , Marques AR , Wormser GP . Diagn Microbiol Infect Dis 2016 86 (1) 93-6 We describe a patient from the United States with PCR- and serology-confirmed Borrelia miyamotoi infection who recovered without antibiotics. Our findings suggest that B. miyamotoi infection may cause relapsing fever, blood monocytosis and antibody reactivity to the C6 peptide. Further studies are required to better define the spectrum of clinical and laboratory findings for this emerging tick-transmitted infection. |
CDC Grand Rounds: Prevention and control of skin cancer
Watson M , Thomas CC , Massetti GM , McKenna S , Gershenwald JE , Laird S , Iskander J , Lushniak B . MMWR Morb Mortal Wkly Rep 2015 64 (47) 1312-4 ![]() Skin cancer is the most common cancer in the United States, and most cases are preventable. Persons with certain genetic risk factors, including having a lighter natural skin color; blue or green eyes; red or blonde hair; dysplastic nevi or a large number of common moles; and skin that burns, freckles, or reddens easily or becomes painful after time in the sun, have increased risk for skin cancer. Persons with a family or personal history of skin cancer, especially melanoma, are also at increased risk. Although these genetic factors contribute to individual risk, most skin cancers are also strongly associated with ultraviolet (UV) radiation exposure. Most UV exposure comes from the sun, although some persons use UV-emitting indoor tanning devices (e.g., beds, booths, and lamps). |
Adults With diabetes hospitalized with pandemic influenza A(H1N1)pdm09--U.S. 2009
Ganatra RB , McKenna JJ , Bramley AM , Skarbinski J , Fry AM , Finelli L , Jain S . Diabetes Care 2013 36 (7) e94 In the U.S., diabetes was common among adults hospitalized with pandemic influenza A(H1N1)pdm09 virus (pH1N1) infection, with a prevalence of 15–25% in national case series (1–3). Despite the influenza burden among patients with diabetes, clinical data are limited. | Through two U.S. pH1N1 hospitalizations case series conducted during the spring and fall of 2009 (1,2), medical records of adults ≥18 years old hospitalized with laboratory-confirmed pH1N1 infection were reviewed. Data were collected as part of public health emergency response and deemed not to be research. We compared clinical features between patients with and without diabetes and performed a Mantel-Haenszel analysis, controlling for obesity (BMI ≥30 kg/m2). | Among 319 adults hospitalized with pH1N1 infection, 72 (23%) had diabetes, including 33 of 169 patients (20%) in the spring and 39 of 150 patients (26%) in the fall of 2009. Patients with diabetes were more likely than those without diabetes to be obese (79 vs. 46%, P < 0.01), to be older (median age 49 vs. 38 years, P < 0.01), and to have cardiovascular disease (32 vs. 18%, Mantel-Haenszel odds ratio 2.2 [95% CI 1.1–4.6]); there were no differences in clinical presentation or median length of stay (4 days). Similar proportions of patients with and without diabetes were admitted ≤2 days of symptom onset (39 vs. 40%). Patients with diabetes were not more likely than patients without diabetes to have pneumonia (37 vs. 47%, 0.6 [0.3–1.2]), sepsis (12 vs. 12%, 1.0 [0.4–2.9]), or acute respiratory distress syndrome (12 vs. 16%, 0.6 [0.2–1.5]). There were no significant differences in receipt of influenza antiviral agents between the two groups (84 vs. 76%, 1.5 [0.7–3.4]), including ≤2 days of symptom onset (32 vs. 37%, 0.8 [0.4–1.6]) and ≤2 days of admission (83 vs. 89%, 0.6 [0.2–1.6]). Patients with diabetes were less likely to require intensive care unit admission than those without diabetes (25 vs. 42%, 0.4 [0.2–0.9]); there was no significant difference in frequency of death (9 vs. 11%, 0.7 [0.2–2.0]). |
Asthma in patients hospitalized with pandemic influenza A(H1N1)pdm09 virus infection-United States, 2009
McKenna JJ , Bramley AM , Skarbinski J , Fry AM , Finelli L , Jain S . BMC Infect Dis 2013 13 57 BACKGROUND: Asthma was the most common co-morbidity among patients hospitalized with pandemic influenza A(H1N1)pdm09 [pH1N1] infection. The objective was to compare characteristics of hospitalized pH1N1 patients with and without asthma and assess factors associated with severity among asthma patients. METHODS: Patient data were derived from two 2009 pandemic case-series of U.S. pH1N1 hospitalizations. A case was defined as a person ≥ 2 years old hospitalized with laboratory-confirmed pH1N1. Asthma status was determined through chart review. RESULTS: Among 473 cases, 29% had asthma. Persons with asthma were more likely to be 2-17 years old (39% vs. 30%, p = 0.04) and black (29% vs. 18%, p < 0.01), and have chronic obstructive pulmonary disease (13% vs. 9%, p = 0.04) but less likely to have pneumonia (37% vs. 47%, p = 0.05), need mechanical ventilation (13% vs. 23%, p = 0.02), and die (4% vs. 10%, p = 0.04) than those without asthma. Among patients with asthma, those admitted to an intensive care unit (ICU) or who died (n = 38) compared with survivors not admitted to an ICU (n = 99) were more likely to have pneumonia on admission (60% vs. 27%, p < 0.01) or acute respiratory distress syndrome (24% vs. 0%, p < 0.01) and less likely to receive influenza antiviral agents ≤ 2 days of admission (73% vs. 92%, p = 0.02). CONCLUSIONS: The majority of persons with asthma had an uncomplicated course; however, severe disease, including ICU admission and death, occurred in asthma patients who presented with pneumonia. Influenza antiviral agents should be started early in hospitalized patients with suspected influenza, including those with asthma. |
A cluster of patients infected with I221V influenza B virus variants with reduced oseltamivir susceptibility--North Carolina and South Carolina, 2010-2011
Garg S , Moore Z , Lee N , McKenna J , Bishop A , Fleischauer A , Springs CB , Nguyen HT , Sheu TG , Sleeman K , Finelli L , Gubareva L , Fry AM . J Infect Dis 2012 207 (6) 966-73 BACKGROUND: During 2010-2011, influenza B viruses with a novel neuraminidase substitution, denoted I221V, (B/I221V) associated with reduced in vitro oseltamivir susceptibility were detected in North Carolina (NC). METHODS: We determined the prevalence of I221V among B viruses submitted to CDC for antiviral resistance surveillance, including all B viruses submitted to NC and South Carolina (SC) state laboratories, during October 2010-September 2011.We conducted chart reviews and phone interviews to characterize NC and SC patients with B/I221V versus wild-type B virus infection (B/WT). RESULTS: We detected I221V in 45 (22%) of 209 B viruses from NC and 8 (10%) of 82 B viruses from SC. We detected I221V in three (0.3%) of 881 B viruses tested from 45 other states. B/I221V infection was not associated with differences in underlying conditions or illness severity compared with B/WT infection. No patients with B/I221V infection received oseltamivir prior to specimen collection. Among patients who completed oseltamivir, those with B/I221V infection reported a longer duration until illness resolution (5 versus 3 days); P=0.02. CONCLUSIONS: B/I221V co-circulated with B/WT in NC and SC during 2010-2011. I221V did not alter illness severity but may have reduced oseltamivir effectiveness. Thus, global surveillance for I221V is important. |
Economic impact of the 2009-2010 Guam mumps outbreak on the public health sector and affected families
Mahamud A , Fiebelkorn AP , Nelson G , Aguon A , McKenna J , Villarruel G , Gallagher K , Ortega-Sanchez IR . Vaccine 2012 30 (45) 6444-8 BACKGROUND: The United States Territory of Guam reported a large mumps outbreak of 505 cases during 2009-2010. We assessed the economic impact of the outbreak from the perspectives of the local public health sector and affected families. METHODS: Using standard cost analysis methods, we retrospectively identified all public health personnel involved in the outbreak response and surveyed them about their outbreak-related activities. We then estimated the costs of outbreak-related personnel hours and materials. We also assessed out-of-pocket costs and costs incurred for work-time missed for persons with mumps and their families. We defined the analysis period as February 25-October 22, 2010. RESULTS: Seventy-six public health personnel were involved in outbreak response activities. Overall, the response required approximately 8264 person-hours, 2380 miles driven, and 3000 doses of measles-mumps-rubella vaccine ordered. The cost to the public health sector was 256,785 U.S. dollars (USD). Families of 102 persons with mumps were interviewed. An estimated 761 USD per person with mumps was spent by families; 88% of this cost was due to missed days of work. The estimated total cost to families of the 470 persons with mumps during the analysis period was 357,670 USD. Total outbreak-related costs were 614,455 USD. CONCLUSIONS: The costs reported underscore the impact of mumps outbreaks in highly vaccinated populations and the need for effective mumps prevention and control strategies. |
Protective value of prophylactic antibiotic treatment of tick bite for Lyme disease prevention: an animal model
Piesman J , Hojgaard A . Ticks Tick Borne Dis 2012 3 (3) 193-6 Clinical studies have demonstrated that prophylactic antibiotic treatment of tick bites by Ixodes scapularis in Lyme disease hyperendemic regions in the northeastern United States can be effective in preventing infection with Borrelia burgdorferi sensu stricto, the Lyme disease spirochete. A large clinical trial in Westchester County, NY (USA), demonstrated that treatment of tick bite with 200mg of oral doxycycline was 87% effective in preventing Lyme disease in tick-bite victims (Nadelman, R.B., Nowakowski, J., Fish, D., Falco, R.C., Freeman, K., McKenna, D., Welch, P., Marcus, R., Aguero-Rosenfeld, M.E., Dennis, D.T., Wormser, G.P., 2001. Prophylaxis with single-dose doxycycline for the prevention of Lyme disease after an Ixodes scapularis tick bite. N. Engl. J. Med. 345, 79-84.). Although this excellent clinical trial provided much needed information, the authors enrolled subjects if the tick bite occurred within 3days of their clinical visit, but did not analyze the data based on the exact time between tick removal and delivery of prophylaxis. An animal model allows for controlled experiments designed to determine the point in time after tick bite when delivery of oral antibiotics would be too late to prevent infection with B. burgdorferi. Accordingly, we developed a tick-bite prophylaxis model in mice that gave a level of prophylactic protection similar to what had been observed in clinical trials and then varied the time post tick bite of antibiotic delivery. We found that two treatments of doxycycline delivered by oral gavage to mice on the day of removal of a single potentially infectious nymphal I. scapularis protected 74% of test mice compared to controls. When treatment was delayed until 24h after tick removal, only 47% of mice were protected; prophylactic treatment was totally ineffective when delivered ≥2days after tick removal. Although the dynamics of antibiotic treatment in mice may differ from humans, and translation of animal studies to patient management must be approached with caution, we believe our results emphasize the point that antibiotic prophylactic treatment of tick bite to prevent Lyme disease is more likely to be efficacious if delivered promptly after potentially infectious ticks are removed from patients. There is only a very narrow window for prophylactic treatment to be effective post tick removal. |
Targeting children through school-based education and policy strategies: comprehensive cancer control activities in melanoma prevention
Townsend JS , Pinkerton B , McKenna SA , Higgins SM , Tai E , Steele CB , Derrick SR , Brown C . J Am Acad Dermatol 2011 65 S104-13 BACKGROUND: Primary school-based educational strategies are proven interventions to raise children's awareness and knowledge about sun safety. OBJECTIVE: We highlight barriers and facilitators to implementing interventions across multiple populations in 3 state comprehensive cancer control programs/partnerships that implemented primary school-based sun-safety educational programs. METHODS: Using a case study approach, we collected semistructured program information and evaluation results from New Mexico's Raising Awareness in Youth about Sun Safety Project, the Sun Protection in Florida Project, and the Arizona SunWise Program. RESULTS: Each program used different strategies for implementing school-based educational programs in their respective state based on local needs, funding constraints, and unique characteristics of their populations. Barriers to implementation included difficulties reaching schools and school administrators and changes in staff workload. Facilitators to implementation included using innovative recruitment approaches (mini grants, school assemblies), having community partners, reaching out to educators in various settings, and having program advocates within schools. Each program placed emphasis on supplementing educational programs with sun-safety policies. LIMITATIONS: We only present a case study from 3 comprehensive cancer control programs/partnerships. Rigorous evaluation methods are needed to test the effectiveness of the various strategies that were used to implement these programs on a population-based level. CONCLUSION: Partnerships and program advocates are important for successfully implementing and sustaining sun-safety programs. Innovative strategies for reaching school administrators are likely needed to effectively implement sun-safety programs and policies. School policy and environmental change are important and valued components of sun-safety programs. |
South Carolina tuberculosis genotype cluster investigation: a tale of substance abuse and recurrent disease
Buff AM , Moonan PK , Desai MA , McKenna TL , Harris DA , Rogers BJ , Rabley SS , Oeltmann JE . Int J Tuberc Lung Dis 2010 14 (10) 1347-1349 ![]() The South Carolina Tuberculosis (TB) Control Division ranked all the TB genotype clusters (two or more cases with matching genotypes) in the state based on the number of cases. The largest cluster, PCR00002, was investigated to determine if the cluster represented recent Mycobacterium tuberculosis transmission, and if so, to identify associated risk factors. The PCR0002 cluster, which included pediatric cases, clearly represented recent M. tuberculosis transmission. The two primary factors contributing to cluster growth were substance abuse and recurrent TB disease. Elimination of ongoing M. tuberculosis transmission in this population will require concurrent treatment for TB disease and substance abuse. |
Change in tobacco use among 13-15 year olds between 1999 and 2008: findings from the Global Youth Tobacco Survey
Warren CW , Lea V , Lee J , Jones NR , Asma S , McKenna M . Glob Health Promot 2009 16 38-90 Tobacco use is the leading preventable cause of death and disease in the world; yet little is known about the levels or patterns of youth tobacco use on a global basis. The purpose of this paper is to focus on change in youth tobacco use using data from 100 sites that have conducted repeat Global Youth Tobacco Surveys (GYTS). The GYTS is a school-based survey that collects data from students aged 13-15 years using a standardized methodology for constructing the sample frame, selecting schools and classes, and processing data. GYTS is conducted in school classes using self-administered anonymous data collection. The GYTS sample produces representative, independent, cross-sectional estimates for each sampling frame. Of the 100 sites surveyed, 61 reported no change over time in prevalence of cigarette smoking, likewise in 50 of the 97 sites with data on use of other tobacco products there was no change. However, 34 sites reported an increase in other tobacco use. This appears to be attributed to waterpipe, an emerging trend in tobacco use. Evidence was found supporting the idea that tobacco use among adolescent girls is likely increasing. The global tobacco control effort continues to face many challenges in reversing the tobacco epidemic. Few countries have implemented comprehensive tobacco control legislation laid out by the World Health Organization. The few countries that have adopted some of these proven policies can serve as examples in achieving positive results in curbing the tobacco epidemic. |
Evolution of the Global Tobacco Surveillance System (GTSS) 1998-2008
Warren CW , Lee J , Lea V , Goding A , O'Hara B , Carlberg M , Asma S , McKenna M . Glob Health Promot 2009 16 4-37 Tobacco use is one of the leading preventable causes of morbidity and mortality worldwide. Given that country-specific international data on tobacco use were limited or nonexistent, in 1998, the World Health Organization (WHO), the Centers for Disease Control and Prevention (CDC), and the Canadian Public Health Association (CPHA) initiated the Global Tobacco Surveillance System (GTSS) to assist countries in establishing tobacco control surveillance and monitoring programs. GTSS includes collection of data through three school-based surveys: the Global Youth Tobacco Survey (GYTS) for youth; the Global School Personnel Survey (GSPS), and the Global Health Professions Student Survey (GHPSS) for adults; and one household survey: the Global Adult Tobacco Survey (GATS) for adults. The GTSS provides a globally implemented and consistent framework for conducting surveillance including standard sampling procedures, core questionnaire items, training in field procedures and analysis of data consistent across all GTSS countries. The GTSS also enhances the role of the nongovernmental sector by supporting participation of civil society agencies in surveillance, monitoring, and policy and program development. The synergy between countries passing tobacco control laws, regulations or decrees, ratifying and complying with the WHO Framework Convention on Tobacco Control, and conducting GTSS surveys offers a unique opportunity to develop, implement, and evaluate comprehensive tobacco control policy that can be helpful to each country document the development, growth, and collaboration in sustaining the GTSS. The report highlights countries' involvement in tobacco control measures and the establishment of comprehensive tobacco control programs worldwide. This report can assist countries in prioritizing and developing tobacco control programs, including surveillance, evaluation, and policy development. |
BMI measurement in schools
Nihiser AJ , Lee SM , Wechsler H , McKenna M , Odom E , Reinold C , Thompson D , Grummer-Strawn L . Pediatrics 2009 124 S89-97 BACKGROUND AND OBJECTIVE: School-based BMI measurement has attracted attention across the nation as a potential approach to address obesity among youth. However, little is known about its impact or effectiveness in changing obesity rates or related physical activity and dietary behaviors that influence obesity. This article describes current BMI-measurement programs and practices, research, and expert recommendations and provides guidance on implementing such an approach. METHODS: An extensive search for scientific articles, position statements, and current state legislation related to BMI-measurement programs was conducted. A literature and policy review was written and presented to a panel of experts. This panel, comprising experts in public health, education, school counseling, school medical care, and parenting, reviewed and provided expertise on this article. RESULTS: School-based BMI-measurement programs are conducted for surveillance or screening purposes. Thirteen states are implementing school-based BMI-measurement programs as required by legislation. Few studies exist that assess the utility of these programs in preventing increases in obesity or the effects these programs may have on weight-related knowledge, attitudes, and behaviors of youth and their families. Typically, expert organizations support school-based BMI surveillance; however, controversy exists over screening. BMI screening does not currently meet all of the American Academy of Pediatrics' criteria for determining whether screening for specific health conditions should be implemented in schools. CONCLUSION: Schools initiating BMI-measurement programs should adhere to safeguards to minimize potential harms and maximize benefits, establish a safe and supportive environment for students of all body sizes, and implement science-based strategies to promote physical activity and healthy eating. |
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