Last data update: Jun 24, 2024. (Total: 47078 publications since 2009)
Records 1-5 (of 5 Records) |
Query Trace: McCombs K [original query] |
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Recent incarceration among individuals infected with hepatitis A virus during person-to-person community outbreaks, United States, 2016-2020
Hagan LM , Montgomery MP , Lauro PL , Cima M , Stringer G , Kupferman NM , Leapley A , Gandhi AP , Nims D , Iberg Johnson J , Bouton L , Burkholder C , Grilli GA , Kittle T , Hansen K , Sievers MM , Newman AP , Albertson JP , Taylor B , Pietrowski M , Stous S , Qiu-Shultz Z , Jones C , Barbeau B , Nicolai LA , McCombs K , Chan M , Cooley L , Gupta N , Nelson N . Public Health Rep 2022 138 (4) 333549221108413 OBJECTIVES: Although many people who are incarcerated have risk factors for hepatitis A virus (HAV) infection, the proportion of hepatitis A cases among people with a recent incarceration is unknown. We examined the relationship between recent incarceration and HAV infection during community-based, person-to-person outbreaks to inform public health recommendations. METHODS: The Centers for Disease Control and Prevention surveyed health departments in 33 jurisdictions reporting person-to-person HAV outbreaks during 2016-2020 on the number of outbreak-associated cases, HAV-infected people recently incarcerated, and HAV-associated hospitalizations and deaths. RESULTS: Twenty-five health departments reported 18 327 outbreak-associated hepatitis A cases during January 11, 2016-January 24, 2020. In total, 2093 (11.4%) HAV-infected people had been recently incarcerated. Of those with complete data, 1402 of 1462 (95.9%) had been held in a local jail, and 1513 of 1896 (79.8.%) disclosed hepatitis A risk factors. Eighteen jurisdictions reported incarceration timing relative to the exposure period. Of 9707 cases in these jurisdictions, 991 (10.2%) were among recently incarcerated people; 451 of 688 (65.6%) people with complete data had been incarcerated during all (n = 55) or part (n = 396) of their exposure period. CONCLUSIONS: Correctional facilities are important settings for reaching people with risk factors for HAV infection and can also be venues where transmission occurs. Providing HAV vaccination to incarcerated people, particularly people housed in jails, can be an effective component of community-wide outbreak response. |
Salmonellosis outbreak after a large-scale food event in Virginia, 2017
Shaw KA , Wright K , Privett K , Holloman K , Levine S , McCombs K , Turner L , Holsinger C , Woolard D . Public Health Rep 2020 135 (5) 668-675 OBJECTIVES: The Virginia Department of Health (VDH) identified an outbreak of Salmonella serotype Javiana infections in Virginia after a chili and chowder cook-off with 11 competitors and about 2500 attendees on September 30, 2017. The objectives of this study were to assess the extent of the outbreak and identify the most likely source of exposure. METHODS: To identify people with suspected Salmonella infection, VDH used press releases and social media posts to recruit event attendees to take an online survey about foods eaten at the cook-off and any gastrointestinal (GI) symptoms experienced. VDH defined a case as reported GI illness that occurred within 1 week after eating food from the cook-off. Confirmed cases required a clinical specimen culture positive for Salmonella. Probable cases reported diarrhea or related clinical symptoms. "Not ill" people did not report GI illness. Investigators calculated unadjusted relative risks of illness and performed stratified analysis to address potential confounding. Available food samples were tested for Salmonella. Environmental health specialists interviewed food handlers and inspected restaurants where 3 competitors had prepared food. RESULTS: Of 438 survey responses, 171 (39%) met the case definition. Of all chilies and chowders consumed, Chowder A was associated with the highest relative risk of illness (8.9; 95% CI, 5.7-13.7). A Chowder A sample tested positive for Salmonella serotype Javiana. The environmental investigation did not identify an original contamination source but did find deficiencies in maintaining safe cooking temperatures. CONCLUSIONS: Epidemiologic and laboratory findings indicated that Chowder A was the most likely cause of outbreak. Recommendations to prevent future outbreaks include preparation of all food on-site to ensure safe temperatures during food preparation and service. |
COVID-19 in Correctional and Detention Facilities - United States, February-April 2020.
Wallace M , Hagan L , Curran KG , Williams SP , Handanagic S , Bjork A , Davidson SL , Lawrence RT , McLaughlin J , Butterfield M , James AE , Patil N , Lucas K , Hutchinson J , Sosa L , Jara A , Griffin P , Simonson S , Brown CM , Smoyer S , Weinberg M , Pattee B , Howell M , Donahue M , Hesham S , Shelley E , Philips G , Selvage D , Staley EM , Lee A , Mannell M , McCotter O , Villalobos R , Bell L , Diedhiou A , Ortbahn D , Clayton JL , Sanders K , Cranford H , Barbeau B , McCombs KG , Holsinger C , Kwit NA , Pringle JC , Kariko S , Strick L , Allord M , Tillman C , Morrison A , Rowe D , Marlow M . MMWR Morb Mortal Wkly Rep 2020 69 (19) 587-590 An estimated 2.1 million U.S. adults are housed within approximately 5,000 correctional and detention facilities(dagger) on any given day (1). Many facilities face significant challenges in controlling the spread of highly infectious pathogens such as SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19). Such challenges include crowded dormitories, shared lavatories, limited medical and isolation resources, daily entry and exit of staff members and visitors, continual introduction of newly incarcerated or detained persons, and transport of incarcerated or detained persons in multiperson vehicles for court-related, medical, or security reasons (2,3). During April 22-28, 2020, aggregate data on COVID-19 cases were reported to CDC by 37 of 54 state and territorial health department jurisdictions. Thirty-two (86%) jurisdictions reported at least one laboratory-confirmed case from a total of 420 correctional and detention facilities. Among these facilities, COVID-19 was diagnosed in 4,893 incarcerated or detained persons and 2,778 facility staff members, resulting in 88 deaths in incarcerated or detained persons and 15 deaths among staff members. Prompt identification of COVID-19 cases and consistent application of prevention measures, such as symptom screening and quarantine, are critical to protecting incarcerated and detained persons and staff members. |
Evaluation of a temperature-restricted, mucosal tuberculosis vaccine in guinea pigs
Gupta T , LaGatta M , Helms S , Pavlicek RL , Owino SO , Sakamoto K , Nagy T , Harvey SB , Papania M , Ledden S , Schultz KT , McCombs C , Quinn FD , Karls RK . Tuberculosis (Edinb) 2018 113 179-188 Tuberculosis (TB) is currently the leading cause of death in humans by a single infectious agent, Mycobacterium tuberculosis. The Bacillus Calmette-Guérin (BCG) vaccine prevents pulmonary TB with variable efficacy, but can cause life-threatening systemic infection in HIV-infected infants. In this study, TBvac85, a derivative of Mycobacterium shottsii expressing M. tuberculosis Antigen 85B, was examined as a safer alternative to BCG. Intranasal vaccination of guinea pigs with TBvac85, a naturally temperature-restricted species, resulted in serum Ag85B-specific IgG antibodies. Delivery of the vaccine by this route also induced protection equivalent to intradermal BCG based on organ bacterial burdens and lung pathology six weeks after aerosol challenge with M. tuberculosis strain Erdman. These results support the potential of TBvac85 as the basis of an effective TB vaccine. Next-generation derivatives expressing multiple M. tuberculosis immunogens are in development. |
Listeria monocytogenes in donated platelets: a potential transfusion-transmitted pathogen intercepted through screening
Menon M , Graves L , McCombs K , Hise K , Silk B , Kuehnert M , Lynch M . Transfusion 2013 53 (9) 1974-8 BACKGROUND: Bacterial contamination of blood components is a potentially life-threatening complication of transfusions. In October 2005, the Centers for Disease Control and Prevention (CDC) noted four Listeria monocytogenes (Lm) isolates cultured from four different units of donated apheresis platelets (PLTs) among Lm isolates sent to the CDC National Listeria Reference Laboratory for subtyping as part of routine surveillance activities. STUDY DESIGN AND METHODS: We describe an investigation to determine possible common sources of infection among donors or factors associated with PLT collection or storage and to determine whether human transfusion-associated listeriosis cases had been reported. We also reviewed all isolates with PLTs as a source sent to the CDC National Listeria Reference Laboratory between November 1, 2005, and December 31, 2011. RESULTS: Each PLT donor-associated isolate had a distinct pulsed-field gel electrophoresis pattern combination. Other than these four cases, no other cases of Lm-contaminated PLTs were identified by the American Red Cross or by CDC during 2005. However, two additional cases of Lm isolated from donated PLTs were detected, one in 2008 and one in 2011. CONCLUSION: Although the source of contamination for these PLT units is unclear, and a source common to all units was not identified, this investigation underscores the value of screening for bacterial contaminants of PLTs. |
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