Last data update: May 06, 2024. (Total: 46732 publications since 2009)
Records 1-12 (of 12 Records) |
Query Trace: McAuley J[original query] |
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Characterization of the first carbapenem-resistant Pseudomonas aeruginosa clinical isolate harboring bla(sim-1) from the United States
Prussing C , Canulla T , Singh N , McAuley P , Gosciminski M , King E , Bandy U , Machado MJ , Karlsson M , Musser KA , Huard RC , Nazarian EJ . Antimicrob Agents Chemother 2021 65 (10) Aac0106621 The emergence and transmission of metallo-β-lactamases are significant public health concerns that threaten the utility of antimicrobial therapy (1, 2).…. |
Prevalence and correlates of active syphilis and HIV co-Infection among sexually active persons aged 15-59 years in Zambia: Results from the Zambia Population-based HIV Impact Assessment (ZAMPHIA) 2016
Solomon H , Moraes AN , Williams DB , Fotso AS , Duong YT , Ndongmo CB , Voetsch AC , Patel H , Lupoli K , McAuley JB , Mulundu G , Kasongo W , Mulenga L . PLoS One 2020 15 (7) e0236501 OBJECTIVES: The main objectives of the study are to estimate HIV prevalence, active syphilis prevalence, and correlates of co-infection with HIV in Zambia, among recently sexually active individuals aged 15 to 59 years old. METHODS: We used data from the 2016 Zambia Population-based HIV Impact Assessment (ZAMPHIA), a national household survey that included biomarker testing for HIV and syphilis. Chembio DPP® Syphilis Screen and Confirm Assay was used to distinguish between active and older syphilis infections. This is the first time Chembio DPP® has been used in a national survey. Log-binominal modelling was utilized to understand the risk of acquiring HIV/active syphilis co-infection using select socio-demographic and sexual behavior variables. Multivariable analysis compared those with co-infection and those with no infection. All reported results account for the complex survey design and are weighted. RESULTS: A total of 19,114 individuals aged 15-59 years responded to the individual interview and had a valid syphilis and/or HIV test. The prevalence for those sexually active in the 12 months preceding ZAMPHIA 2016 was 3.5% and 13% for active syphilis and HIV, respectively. The prevalence of HIV/active syphilis co-infection was 1.5%. Factors associated with higher prevalence of co-infection versus no infection among females included, but were not limited to, those living in urban areas (adjusted prevalence ratio (aPR) = 3.0, 95% CI = 1.8, 4.8), those had sexual intercourse before age 15 years (aPR = 1.8, 95% CI = 1.1, 2.9), and those who had two or more sexual partners in the 12 months preceding the survey (aPR = 2.7, 95% CI = 1.6, 4.7). CONCLUSION: These findings show high prevalence for both mono-infection with HIV and syphilis, as well as co-infection with HIV/active syphilis in Zambia. There is a need for better screening and partner services, particularly among those engaging in high-risk sexual behaviors (e.g., engaging in transactional sex). |
HIV outbreaks among people who inject drugs in Europe, North America, and Israel
Des Jarlais DC , Sypsa V , Feelemyer J , Abagiu AO , Arendt V , Broz D , Chemtob D , Seguin-Devaux C , Duwve JM , Fitzgerald M , Goldberg DJ , Hatzakis A , Jipa RE , Katchman E , Keenan E , Khan I , Konrad S , McAuley A , Skinner S , Wiessing L . Lancet HIV 2020 7 (6) e434-e442 During 2011-16, HIV outbreaks occurred among people who inject drugs (PWID) in Canada (southeastern Saskatchewan), Greece (Athens), Ireland (Dublin), Israel (Tel Aviv), Luxembourg, Romania (Bucharest), Scotland (Glasgow), and USA (Scott County, Indiana). Factors common to many of these outbreaks included community economic problems, homelessness, and changes in drug injection patterns. The outbreaks differed in size (from under 100 to over 1000 newly reported HIV cases among PWID) and in the extent to which combined prevention had been implemented before, during, and after the outbreaks. Countries need to ensure high coverage of HIV prevention services and coverage higher than the current UNAIDS recommendation might be needed in areas in which short acting drugs are injected. In addition, monitoring of PWID with special attention for changing drug use patterns, risk behaviours, and susceptible subgroups (eg, PWID experiencing homelessness) needs to be in place to prevent or rapidly detect and contain new HIV outbreaks. |
Duration of exposure among close contacts of patients with infectious tuberculosis and risk of latent tuberculosis infection
Reichler MR , Khan A , Yuan Y , Chen B , McAuley J , Mangura B , Sterling TR . Clin Infect Dis 2020 71 (7) 1627-1634 BACKGROUND: Predictors of latent tuberculosis infection (LTBI) among close contacts of persons with infectious tuberculosis (TB) are incompletely understood, particularly the number of exposure hours. METHODS: We prospectively enrolled adult patients with culture-confirmed pulmonary TB and their close contacts at 9 health departments in the United States and Canada. Patients with TB were interviewed and close contacts were interviewed and screened for TB and LTBI during contact investigations. RESULTS: LTBI was diagnosed in 1390 (46%) of 3040 contacts, including 624 (31%) of 2027 US/Canadian-born and 766 (76%) of 1013 non-US/Canadian-born contacts. In multivariable analysis, age >/=5 years, male sex, non-US/Canadian birth, smear-positive index patient, and shared bedroom with an index patient (P < .001 for each), as well as exposure to >1 index patient (P < .05), were associated with LTBI diagnosis. LTBI prevalence increased with increasing exposure duration, with an incremental prevalence increase of 8.2% per 250 exposure hours (P < .0001). For contacts with <250 exposure hours, no difference in prevalence was observed per 50 exposure hours (P = .63). CONCLUSIONS: Hours of exposure to a patient with infectious TB is an important LTBI predictor, with a possible risk threshold of 250 hours. More exposures, closer exposure proximity, and more extensive index patient disease were additional LTBI predictors. |
Risk factors for tuberculosis and effect of preventive therapy among close contacts of persons with infectious tuberculosis
Reichler MR , Khan A , Sterling TR , Zhao H , Chen B , Yuan Y , Moran J , McAuley J , Mangura B . Clin Infect Dis 2019 70 (8) 1562-1572 BACKGROUND: Close contacts of persons with pulmonary tuberculosis (TB) have high rates of TB disease. METHODS: We prospectively enrolled adult TB patients and their close contacts at nine United States and Canadian sites. TB patients and contacts were interviewed to identify potential index patient, contact, and exposure risk factors for TB. Contacts were evaluated for latent TB infection (LTBI) and TB, and the effectiveness of LTBI treatment for preventing contact TB was examined. RESULTS: Among 4490 close contacts, multivariable risk factors for TB were age < 5 years, US/Canadian birth, human immunodeficiency virus infection, skin test induration > 10 mm, shared bedroom with an index patient, exposure to more than one index patient, and index patient weight loss (P<.05 for each). Of 1406 skin test-positive contacts, TB developed in 49 (9.8%) of 446 who did not initiate treatment, 8 (1.8%) of 443 who received partial treatment, and 1 (0.2%) of 517 who completed treatment (1951, 290, and 31 cases/100,000 person years, respectively; P<.001). TB was diagnosed in 4.2% of US/Canadian-born compared with 2.3% of foreign-born contacts (P=.002), and rates of TB for US/Canadian-born and foreign-born contacts who did not initiate treatment were 3592 and 811 per 100,000 person years, respectively (P<.001). CONCLUSIONS: Treatment for LTBI was highly effective in preventing TB among close contacts of infectious TB patients. A number of index patient, contact, and exposure characteristics associated with increased risk of contact TB were identified. These findings help inform contact investigation, LTBI treatment, and other public health prevention efforts. |
Introduction of Ebola virus into a remote border district of Sierra Leone, 2014: use of field epidemiology and RNA sequencing to describe chains of transmission.
DeSilva MB , Styles T , Basler C , Moses FL , Husain F , Reichler M , Whitmer S , McAuley J , Belay E , Friedman M , Muoghalu IS , Swaray P , Stroher U , Redd JT . Epidemiol Infect 2019 147 e88 In early October 2014, 7 months after the 2014-2015 Ebola epidemic in West Africa began, a cluster of reported deaths in Koinadugu, a remote district of Sierra Leone, was the first evidence of Ebola virus disease (Ebola) in the district. Prior to this event, geographic isolation was thought to have prevented the introduction of Ebola to this area. We describe our initial investigation of this cluster of deaths and subsequent public health actions after Ebola was confirmed, and present challenges to our investigation and methods of overcoming them. We present a transmission tree and results of whole genome sequencing of selected isolates to identify the source of infection in Koinadugu and demonstrate transmission between its villages. Koinadugu's experience highlights the danger of assuming that remote location and geographic isolation can prevent the spread of Ebola, but also demonstrates how deployment of rapid field response teams can help limit spread once Ebola is detected. |
Risk and timing of tuberculosis among close contacts of persons with infectious tuberculosis
Reichler MR , Khan A , Sterling TR , Zhao H , Moran J , McAuley J , Bessler P , Mangura B . J Infect Dis 2018 218 (6) 1000-1008 Background: The risk and timing of tuberculosis (TB) among recently exposed close contacts of patients with infectious TB is not well established. Methods: We prospectively enrolled culture-confirmed pulmonary TB patients >/=15 years of age and their close contacts at nine health departments in the United States and Canada. Close contacts were screened and cross-matched with TB registries to identify those who developed TB. Results: TB was diagnosed in 158 (4%) of 4490 contacts to 718 index TB patients. Of those with TB, cumulative totals of 81 (51%), 119 (75%), 128 (81%) and 145 (92%) were diagnosed by 1, 3, 6, and 12 months after index case diagnosis, respectively. TB rates among contacts were 2644, 115, 46, 69, and 25 per 100,000 persons, respectively, in the five consecutive years after index patient diagnosis. Of the TB cases among contacts, 121 (77%) were identified by contact investigation and 37 (23%) by TB registry cross-match. Conclusions: Close contacts to infectious TB patients had high rates of TB, with most disease diagnosed before or within 3 months after index patient diagnosis. Contact investigations need to be prompt to detect TB and maximize the opportunity to identify and treat latent infection in order to prevent disease. |
Rapid reduction of maternal mortality in Uganda and Zambia through the Saving Mothers, Giving Life initiative: results of year 1 evaluation
Serbanescu F , Goldberg HI , Danel I , Wuhib T , Marum L , Obiero W , McAuley J , Aceng J , Chomba E , Stupp PW , Conlon CM . BMC Pregnancy Childbirth 2017 17 (1) 42 BACKGROUND: Achieving maternal mortality reduction as a development goal remains a major challenge in most low-resource countries. Saving Mothers, Giving Life (SMGL) is a multi-partner initiative designed to reduce maternal mortality rapidly in high mortality settings through community and facility evidence-based interventions and district-wide health systems strengthening that could reduce delays to appropriate obstetric care. METHODS: An evaluation employing multiple studies and data collection methods was used to compare baseline maternal outcomes to those during Year 1 in SMGL pilot districts in Uganda and Zambia. Studies include health facility assessments, pregnancy outcome monitoring, enhanced maternal mortality detection in facilities, and population-based investigation of community maternal deaths. Population-based evaluation used standard approaches and comparable indicators to measure outcome and impact, and to allow comparison of the SMGL implementation in unique country contexts. RESULTS: The evaluation found a 30% reduction in the population-based maternal mortality ratio (MMR) in Uganda during Year 1, from 452 to 316 per 100,000 live births. The MMR in health facilities declined by 35% in each country (from 534 to 345 in Uganda and from 310 to 202 in Zambia). The institutional delivery rate increased by 62% in Uganda and 35% in Zambia. The number of facilities providing emergency obstetric and newborn care (EmONC) rose from 10 to 25 in Uganda and from 7 to 11 in Zambia. Partial EmONC care became available in many more low and mid-level facilities. Cesarean section rates for all births increased by 23% in Uganda and 15% in Zambia. The proportion of women with childbirth complications delivered in EmONC facilities rose by 25% in Uganda and 23% in Zambia. Facility case fatality rates fell from 2.6 to 2.0% in Uganda and 3.1 to 2.0% in Zambia. CONCLUSIONS: Maternal mortality ratios fell significantly in one year in Uganda and Zambia following the introduction of the SMGL model. This model employed a comprehensive district system strengthening approach. The lessons learned from SMGL can inform policymakers and program managers in other low and middle income settings where similar approaches could be utilized to rapidly reduce preventable maternal deaths. |
Early diagnosis of HIV infection in infants - one Caribbean and six sub-Saharan African countries, 2011-2015
Diallo K , Kim AA , Lecher S , Ellenberger D , Beard RS , Dale H , Hurlston M , Rivadeneira M , Fonjungo PN , Broyles LN , Zhang G , Sleeman K , Nguyen S , Jadczak S , Abiola N , Ewetola R , Muwonga J , Fwamba F , Mwangi C , Naluguza M , Kiyaga C , Ssewanyana I , Varough D , Wysler D , Lowrance D , Louis FJ , Desinor O , Buteau J , Kesner F , Rouzier V , Segaren N , Lewis T , Sarr A , Chipungu G , Gupta S , Singer D , Mwenda R , Kapoteza H , Chipeta Z , Knight N , Carmona S , MacLeod W , Sherman G , Pillay Y , Ndongmo CB , Mugisa B , Mwila A , McAuley J , Chipimo PJ , Kaonga W , Nsofwa D , Nsama D , Mwamba FZ , Moyo C , Phiri C , Borget MY , Ya-Kouadio L , Kouame A , Adje-Toure CA , Nkengasong J . MMWR Morb Mortal Wkly Rep 2016 65 (46) 1285-1290 Pediatric human immunodeficiency virus (HIV) infection remains an important public health issue in resource-limited settings. In 2015, 1.4 million children aged <15 years were estimated to be living with HIV (including 170,000 infants born in 2015), with the vast majority living in sub-Saharan Africa. In 2014, 150,000 children died from HIV-related causes worldwide. Access to timely HIV diagnosis and treatment for HIV-infected infants reduces HIV-associated mortality, which is approximately 50% by age 2 years without treatment. Since 2011, the annual number of HIV-infected children has declined by 50%. Despite this gain, in 2014, only 42% of HIV-exposed infants received a diagnostic test for HIV, and in 2015, only 51% of children living with HIV received antiretroviral therapy (1). Access to services for early infant diagnosis of HIV (which includes access to testing for HIV-exposed infants and clinical diagnosis of HIV-infected infants) is critical for reducing HIV-associated mortality in children aged <15 years. Using data collected from seven countries supported by the U.S. President's Emergency Plan for AIDS Relief (PEPFAR), progress in the provision of HIV testing services for early infant diagnosis was assessed. During 2011-2015, the total number of HIV diagnostic tests performed among HIV-exposed infants within 6 weeks after birth (tests for early infant diagnosis of HIV), as recommended by the World Health Organization (WHO) increased in all seven countries (Cote d'Ivoire, the Democratic Republic of the Congo, Haiti, Malawi, South Africa, Uganda, and Zambia); however, in 2015, the rate of testing for early infant diagnosis among HIV-exposed infants was <50% in five countries. HIV positivity among those tested declined in all seven countries, with three countries (Cote d'Ivoire, the Democratic Republic of the Congo, and Uganda) reporting >50% decline. The most common challenges for access to testing for early infant diagnosis included difficulties in specimen transport, long turnaround time between specimen collection and receipt of results, and limitations in supply chain management. Further reductions in HIV mortality in children can be achieved through continued expansion and improvement of services for early infant diagnosis in PEPFAR-supported countries, including initiatives targeted to reach HIV-exposed infants, ensure access to programs for early infant diagnosis of HIV, and facilitate prompt linkage to treatment for children diagnosed with HIV infection. |
Recovery of West Nile virus envelope protein domain III chimeras with altered antigenicity and mouse virulence
McAuley AJ , Torres M , Plante JA , Huang CY , Bente DA , Beasley DW . J Virol 2016 90 (9) 4757-4770 Flaviviruses are positive-sense, single-stranded RNA viruses responsible for millions of human infections annually. The envelope (E) protein of flaviviruses comprises three structural domains, of which domain III (EIII) represents a discrete subunit. EIII typically encodes epitopes recognized by virus-specific, potently neutralizing antibodies and is believed to play a major role in receptor binding. In order to assess potential interactions between EIII and the remainder of the E protein, and to assess effects of EIII sequence substitutions on antigenicity, growth, and virulence of a representative flavivirus, chimeric viruses were generated using the West Nile virus (WNV) infectious clone, into which EIIIs from nine flaviviruses of varying genetic diversity from WNV were substituted. Of the constructs tested, chimeras containing EIIIs from Koutango virus (KOUV), Japanese encephalitis virus (JEV), St Louis encephalitis virus (SLEV), and Bagaza virus (BAGV) were successfully recovered. Characterization of the chimeras in vitro and in vivo revealed differences in growth and virulence between the viruses, with in vivo pathogenesis often not correlated to in vitro growth. Taken together, the data demonstrate that substitutions of EIII can allow for the generation of viable chimeric viruses with significantly altered antigenicity and virulence. IMPORTANCE: The envelope (E) glycoprotein is the major protein present on the surface of flavivirus virions, and is responsible for mediating virus binding and entry into target cells. Several viable West Nile virus (WNV) variants were recovered with chimeric E proteins in which the putative receptor-binding domain (EIII) sequences of other mosquito-borne flaviviruses were substituted in place of the WNV EIII, although substitution of several more divergent EIII sequences were not tolerated. The differences in virulence and tissue tropism observed with the chimeric viruses indicate a significant role for this sequence in determining the pathogenesis of the virus within the mammalian host. Our studies demonstrate that these chimeras are viable, and suggest that such recombinant viruses may be useful to investigate domain-specific antibody responses and to more extensively define the contributions of EIII to tropism and pathogenesis of WNV or other flaviviruses. |
Nosocomial transmission of Ebola virus disease on pediatric and maternity wards: Bombali and Tonkolili, Sierra Leone, 2014
Dunn AC , Walker TA , Redd J , Sugerman D , McFadden J , Singh T , Jasperse J , Kamara BO , Sesay T , McAuley J , Kilmarx PH . Am J Infect Control 2015 44 (3) 269-72 BACKGROUND: In the largest Ebola virus disease (EVD) outbreak in history, nosocomial transmission of EVD increased spread of the disease. We report on 2 instances in Sierra Leone where patients unknowingly infected with EVD were admitted to a general hospital ward (1 pediatric ward and 1 maternity ward), exposing health care workers, caregivers, and other patients to EVD. Both patients died on the general wards, and were later confirmed as being infected with EVD. We initiated contact tracing and assessed risk factors for secondary infections to guide containment recommendations. METHODS: We reviewed medical records to establish the index patients' symptom onset. Health care workers, patients, and caregivers were interviewed to determine exposures and personal protective equipment (PPE) use. Contacts were monitored daily for EVD symptoms. Those who experienced EVD symptoms were isolated and tested. RESULTS: Eighty-two contacts were identified: 64 health care workers, 7 caregivers, 4 patients, 4 newborns, and 3 children of patients. Seven contacts became symptomatic and tested positive for EVD: 2 health care workers (1 nurse and 1 hospital cleaner), 2 caregivers, 2 newborns, and 1 patient. The infected nurse placed an intravenous catheter in the pediatric index patient with only short gloves PPE and the hospital cleaner cleaned the operating room of the maternity ward index patient wearing short gloves PPE. The maternity ward index patient's caregiver and newborn were exposed to her body fluids. The infected patient and her newborn shared the ward and latrine with the maternity ward index patient. Hospital staff members did not use adequate PPE. Caregivers were not offered PPE. CONCLUSIONS: Delayed recognition of EVD and inadequate PPE likely led to exposures and secondary infections. Earlier recognition of EVD and adequate PPE might have reduced direct contact with body fluids. Limiting nonhealth-care worker contact, improving access to PPE, and enhancing screening methods for pregnant women, children, and inpatients may help decrease EVD transmission in general health care settings. |
Ebola virus disease in health care workers - Sierra Leone, 2014
Kilmarx PH , Clarke KR , Dietz PM , Hamel MJ , Husain F , McFadden JD , Park BJ , Sugerman DE , Bresee JS , Mermin J , McAuley J , Jambai A . MMWR Morb Mortal Wkly Rep 2014 63 (49) 1168-71 Health care workers (HCWs) are at increased risk for infection in outbreaks of Ebola virus disease (Ebola). To characterize Ebola in HCWs in Sierra Leone and guide prevention efforts, surveillance data from the national Viral Hemorrhagic Fever database were analyzed. In addition, site visits and interviews with HCWs and health facility administrators were conducted. As of October 31, 2014, a total of 199 (5.2%) of the total of 3,854 laboratory-confirmed Ebola cases reported from Sierra Leone were in HCWs, representing a much higher estimated cumulative incidence of confirmed Ebola in HCWs than in non-HCWs, based on national data on the number of HCW. The peak number of confirmed Ebola cases in HCWs was reported in August (65 cases), and the highest number and percentage of confirmed Ebola cases in HCWs was in Kenema District (65 cases, 12.9% of cases in Kenema), mostly from Kenema General Hospital. Confirmed Ebola cases in HCWs continued to be reported through October and were from 12 of 14 districts in Sierra Leone. A broad range of challenges were reported in implementing infection prevention and control measures. In response, the Ministry of Health and Sanitation and partners are developing standard operating procedures for multiple aspects of infection prevention, including patient isolation and safe burials; recruiting and training staff in infection prevention and control; procuring needed commodities and equipment, including personal protective equipment and vehicles for safe transport of Ebola patients and corpses; renovating and constructing Ebola care facilities designed to reduce risk for nosocomial transmission; monitoring and evaluating infection prevention and control practices; and investigating new cases of Ebola in HCWs as sentinel public health events to identify and address ongoing prevention failures. |
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