Last data update: May 30, 2025. (Total: 49382 publications since 2009)
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Assessing pathogen transmission opportunities: Variation in nursing home staff-resident interactions
Nelson Chang NC , Leecaster M , Fridkin S , Dube W , Katz M , Polgreen P , Roghmann MC , Khader K , Li L , Dumyati G , Tsay R , Lynfield R , Mahoehney JP , Nadle J , Hutson J , Pierce R , Zhang A , Wilson C , Haroldsen C , Mulvey D , Reddy SC , Stone ND , Slayton RB , Thompson ND , Stratford K , Samore M , Visnovsky LD . J Am Med Dir Assoc 2023 24 (5) 735 e1-735 e9 OBJECTIVES: The Centers for Disease Control and Prevention (CDC) recommends implementing Enhanced Barrier Precautions (EBP) for all nursing home (NH) residents known to be colonized with targeted multidrug-resistant organisms (MDROs), wounds, or medical devices. Differences in health care personnel (HCP) and resident interactions between units may affect risk of acquiring and transmitting MDROs, affecting EBP implementation. We studied HCP-resident interactions across a variety of NHs to characterize MDRO transmission opportunities. DESIGN: 2 cross-sectional visits. SETTING AND PARTICIPANTS: Four CDC Epicenter sites and CDC Emerging Infection Program sites in 7 states recruited NHs with a mix of unit care types (≥30 beds or ≥2 units). HCP were observed providing resident care. METHODS: Room-based observations and HCP interviews assessed HCP-resident interactions, care type provided, and equipment use. Observations and interviews were conducted for 7-8 hours in 3-6-month intervals per unit. Chart reviews collected deidentified resident demographics and MDRO risk factors (eg, indwelling devices, pressure injuries, and antibiotic use). RESULTS: We recruited 25 NHs (49 units) with no loss to follow-up, conducted 2540 room-based observations (total duration: 405 hours), and 924 HCP interviews. HCP averaged 2.5 interactions per resident per hour (long-term care units) to 3.4 per resident per hour (ventilator care units). Nurses provided care to more residents (n = 12) than certified nursing assistants (CNAs) and respiratory therapists (RTs) (CNA: 9.8 and RT: 9) but nurses performed significantly fewer task types per interaction compared to CNAs (incidence rate ratio (IRR): 0.61, P < .05). Short-stay (IRR: 0.89) and ventilator-capable (IRR: 0.94) units had less varied care compared with long-term care units (P < .05), although HCP visited residents in these units at similar rates. CONCLUSIONS AND IMPLICATIONS: Resident-HCP interaction rates are similar across NH unit types, differing primarily in types of care provided. Current and future interventions such as EBP, care bundling, or targeted infection prevention education should consider unit-specific HCP-resident interaction patterns. |
The community-wide effectiveness of municipal larval control programs for West Nile virus risk reduction in Connecticut, United States
McMillan JR , Harden CA , Burtis JC , Breban MI , Shepard JJ , Petruff TA , Misencik MJ , Bransfield AB , Poggi JD , Harrington LC , Andreadis TG , Armstrong PM . Pest Manag Sci 2021 77 (11) 5186-5201 BACKGROUND: Mosquito larval control through the use of insecticides is the most common strategy for suppressing West Nile virus (WNV) vector populations in Connecticut (CT), United States. To evaluate the ability of larval control to reduce entomological risk metrics associated with WNV, we performed WNV surveillance and assessments of municipal larvicide application programs in Milford and Stratford, CT in 2019 and 2020. Each town treated catch basins and non-basin habitats (Milford only) with biopesticide products during both WNV transmission seasons. Adult mosquitoes were collected weekly with gravid and CO(2) -baited light traps and tested for WNV; larvae and pupae were sampled weekly from basins within 500 m of trapping sites, and Culex pipiens larval mortality was determined with lab bioassays of catch basin water samples. RESULTS: Declines in 4th instar larvae and pupae were observed in catch basins up to 2-weeks post-treatment, and we detected a positive relationship between adult female Cx. pipiens collections in gravid traps and pupal abundance in basins. We also detected a significant difference in total light trap collections between the two towns. Despite these findings, Cx. pipiens adult collections and WNV mosquito infection prevalence in gravid traps were similar between towns. CONCLUSION: Larvicide applications reduced pupal abundance and the prevalence of host-seeking adults with no detectable impact on entomological risk metrics for WNV. Further research is needed to better determine the level of mosquito larval control required to reduce WNV transmission risk. This article is protected by copyright. All rights reserved. |
Environmental contamination of contact precaution and non-contact precaution patient rooms in six acute care facilities
Tanner WD , Leecaster MK , Zhang Y , Stratford KM , Mayer J , Visnovsky LD , Alhmidi H , Cadnum JL , Jencson AL , Koganti S , Bennett CP , Donskey CJ , Noble-Wang J , Reddy SC , Rose LJ , Watson L , Ide E , Wipperfurth T , Safdar N , Arasim M , Macke C , Roman P , Krein SL , Loc-Carrillo C , Samore MH . Clin Infect Dis 2021 72 S8-s16 BACKGROUND: Environmental contamination is an important source of hospital multidrug-resistant organism (MDRO) transmission. Factors such as patient MDRO contact precautions (CP) status, patient proximity to surfaces, and unit type likely influence MDRO contamination and bacterial bioburden levels on patient room surfaces. Identifying factors associated with environmental contamination in patient rooms and on shared unit surfaces could help identify important environmental MDRO transmission routes. METHODS: Surfaces were sampled from MDRO CP and non-CP rooms, nursing stations, and mobile equipment in acute care, intensive care, and transplant units within 6 acute care hospitals using a convenience sampling approach blinded to cleaning events. Precaution rooms had patients with clinical or surveillance tests positive for methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, carbapenem-resistant Enterobacteriaceae or Acinetobacter within the previous 6 months, or Clostridioides difficile toxin within the past 30 days. Rooms not meeting this definition were considered non-CP rooms. Samples were cultured for the above MDROs and total bioburden. RESULTS: Overall, an estimated 13% of rooms were contaminated with at least 1 MDRO. MDROs were detected more frequently in CP rooms (32% of 209 room-sample events) than non-CP rooms (12% of 234 room-sample events). Surface bioburden did not differ significantly between CP and non-CP rooms or MDRO-positive and MDRO-negative rooms. CONCLUSIONS: CP room surfaces are contaminated more frequently than non-CP room surfaces; however, contamination of non-CP room surfaces is not uncommon and may be an important reservoir for ongoing MDRO transmission. MDRO contamination of non-CP rooms may indicate asymptomatic patient MDRO carriage, inadequate terminal cleaning, or cross-contamination of room surfaces via healthcare personnel hands. |
Improving access to eye care among persons at high-risk of glaucoma in Philadelphia - design and methodology: The Philadelphia Glaucoma Detection and Treatment Project
Hark L , Waisbourd M , Myers JS , Henderer J , Crews JE , Saaddine JB , Molineaux J , Johnson D , Sembhi H , Stratford S , Suleiman A , Pizzi L , Spaeth GL , Katz LJ . Ophthalmic Epidemiol 2016 23 (2) 1-9 PURPOSE: The Wills Eye Glaucoma Research Center initiated a 2-year demonstration project to develop and implement a community-based intervention to improve detection and management of glaucoma in Philadelphia. METHODS: The glaucoma detection examination consisted of: ocular, medical, and family history; visual acuity testing; corneal pachymetry; biomicroscopy of the anterior segment; intraocular pressure (IOP) measurement; gonioscopy; funduscopy; automated visual field testing; and fundus-color photography. Treatment included laser surgery and/or IOP-lowering medication. A cost analysis was conducted to understand resource requirements. Outcome measures included; prevalence of glaucoma-related pathology and other eye diseases among high-risk populations; the impact of educational workshops on level of knowledge about glaucoma (assessed by pre- and post-test evaluation); and patient satisfaction of the glaucoma detection examinations in the community (assessed by satisfaction survey). Treatment outcome measures were change in IOP at 4-6 weeks and 4-6 months following selective laser trabeculoplasty treatment, deepening of the anterior chamber angle following laser-peripheral iridotomy treatment, and rate of adherence to recommended follow-up examinations. Cost outcomes included total program costs, cost per case of glaucoma detected, and cost per case of ocular disease detected. RESULTS: This project enrolled 1649 participants (African Americans aged 50+ years, adults 60+ years and individuals with a family history of glaucoma). A total of 1074 individuals attended a glaucoma educational workshop and 1508 scheduled glaucoma detection examination appointments in the community setting. CONCLUSIONS: The Philadelphia Glaucoma Detection and Treatment Project aimed to improve access and use of eye care and to provide a model for a targeted community-based glaucoma program. |
Health department HIV prevention programs that support the national HIV/AIDS strategy: the enhanced comprehensive HIV prevention planning project, 2010–2013
Fisher HH , Hoyte T , Purcell DW , van Handel M , Williams W , Krueger A , Dietz P , Stratford D , Heitgerd J , Dunbar E , Wan C , Linley LA , Flores SA . Public Health Rep 2016 131 (1) 185-194 OBJECTIVE: The Enhanced Comprehensive HIV Prevention Planning project was the first initiative of the Centers for Disease Control and Prevention (CDC) to address the goals of the National HIV/AIDS Strategy (NHAS). Health departments in 12 U.S. cities with a high prevalence of AIDS conducted comprehensive program planning and implemented cost-effective, scalable HIV prevention interventions that targeted high-risk populations. We examined trends in health department HIV prevention programs in these cities during the project. METHODS: We analyzed the number of people who received partner services, condoms distributed, and people tested for HIV, as well as funding allocations for selected HIV prevention programs by year and by site from October 2010 through September 2013. We assessed trends in the proportional change in services and allocations during the project period using generalized estimating equations. We also conducted thematic coding of program activities that targeted people living with HIV infection (PLWH). RESULTS: We found significant increases in funding allocations for HIV testing and condom distribution. All HIV partner services indicators, condom distribution, and HIV testing of African American and Hispanic/Latino populations significantly increased. HIV tests associated with a new diagnosis increased significantly among those self-identifying as Hispanic/Latino but significantly decreased among African Americans. For programs targeting PLWH, health department activities included implementing new program models, improving local data use, and building local capacity to enhance linkage to HIV medical care, retention in care, and treatment adherence. CONCLUSIONS: Overall, these findings indicate that health departments in areas with a high burden of AIDS successfully shifted their HIV prevention resources to scale up important HIV programs and make progress toward NHAS goals. © 2016 Association of Schools and Programs of Public Health. |
Shifting resources and focus to meet the goals of the National HIV/AIDS Strategy: The Enhanced Comprehensive HIV Prevention Planning Project, 2010-2013
Flores S A , Purcell D W , Fisher H H , Belcher L , Carey J W , Courtenay-Quirk C , Dunbar E , Eke A N , Galindo C , Glassman M , Margolis A D , Newman M S , Prather C , Stratford D , Taylor R D , Mermin J . Public Health Rep 2016 131 (1) 52-58 In September 2010, CDC launched the Enhanced Comprehensive HIV Preven¬tion Planning (ECHPP) project to shift HIV-related activities to meet goals of the 2010 National HIV/AIDS Strategy (NHAS). Twelve health departments in cities with high AIDS burden participated. These 12 grantees submitted plans detailing jurisdiction-level goals, strategies, and objectives for HIV prevention and care activities. We reviewed plans to identify themes in the planning process and initial implementation. Planning themes included data integration, broad engagement of partners, and resource allocation modeling. Implementation themes included organizational change, building partnerships, enhancing data use, developing protocols and policies, and providing training and technical assistance for new and expanded activities. Pilot programs also allowed grantees to assess the feasibility of large-scale implementation. These findings indicate that health departments in areas hardest hit by HIV are shifting their HIV prevention and care programs to increase local impact. Examples from ECHPP will be of interest to other health departments as they work toward meeting the NHAS goals. |
Evaluation framework for HIV prevention and care activities in the Enhanced Comprehensive HIV Prevention Planning Project, 2010-2013
Fisher H H , Hoyte T , Flores S A , Purcell D W , Dunbar E , Stratford D . Public Health Rep 2016 131 (1) 67-75 OBJECTIVE: The Enhanced Comprehensive HIV Prevention Planning (ECHPP) project was a demonstration project implemented by 12 U.S. health departments (2010–2013) to enhance HIV program planning in cities with high AIDS prevalence, in support of National HIV/AIDS Strategy goals. Grantees were required to improve their planning and implementation of HIV prevention and care programs to increase their impact on local HIV epidemics. A multilevel evaluation using multiple data sources, spanning multiple years (2008–2015), will be conducted to assess the effect of ECHPP on client outcomes (e.g., HIV risk behaviors) and impact indicators (e.g., new HIV diagnoses). METHODS: We designed an evaluation approach that includes a broad assessment of program planning and implementation, a detailed examination of HIV prevention and care activities across funding sources, and an analysis of environmental and contextual factors that may affect services. A data triangulation approach was incorporated to integrate findings across all indicators and data sources to determine the extent to which ECHPP contributed to trends in indicators. RESULTS: To date, data have been collected for 2008–2009 (pre-ECHPP implementation) and 2010–2013 (ECHPP period). Initial analysis of process data indicate the ECHPP grantees increased their provision of HIV testing, condom distribution, and partner services programs and expanded their delivery of prevention programs for people diagnosed with HIV. CONCLUSION: The ECHPP evaluation (2008–2015) will assess whether ECHPP programmatic activities in 12 areas with high AIDS prevalence contributed to changes in client outcomes, and whether these changes were associated with changes in longer-term, community-level impact. |
Routine HIV screening in two health-care settings - New York City and New Orleans, 2011-2013
Lin X , Dietz PM , Rodriguez V , Lester D , Hernandez P , Moreno-Walton L , Johnson G , Van Handel MM , Skarbinski J , Mattson CL , Stratford D , Belcher L , Branson BM . MMWR Morb Mortal Wkly Rep 2014 63 (25) 537-41 Approximately 16% of the estimated 1.1 million persons living with human immunodeficiency virus (HIV) in the United States are unaware of their infection and thus unable to benefit from effective treatment that improves health and reduces transmission risk. Since 2006, CDC has recommended that health-care providers screen for HIV all patients aged 13-64 years unless prevalence of undiagnosed HIV infection in their patients has been documented to be <0.1%. This report describes novel HIV screening programs at the Urban Health Plan (UHP), Inc. in New York City and the Interim Louisiana Hospital (ILH) in New Orleans. Data were provided by the two programs. UHP screened a monthly average of 986 patients for HIV during January 2011-September 2013. Of the 32,534 patients screened, 148 (0.45%) tested HIV-positive, of whom 147 (99%) received their test result and 43 (29%) were newly diagnosed. None of the 148 patients with HIV infection were previously receiving medical care, and 120 (81%) were linked to HIV medical care. The ILH emergency department (ED) and the urgent-care center (UCC) screened a monthly average of 1,323 patients from mid-March to December 2013. Of the 12,568 patients screened, 102 (0.81%) tested HIV-positive, of whom 100 (98%) received their test result, 77 (75%) were newly diagnosed, and five (5%) had acute HIV infection. Linkage to HIV medical care was successful for 67 (74%) of 91 patients not already in care. Routine HIV screening identified patients with new and previously diagnosed HIV infection and facilitated their linkage to medical care. The two HIV screening programs highlighted in this report can serve as models that could be adapted by other health-care settings. |
Genetic divergence among members of the Kokobera group of flaviviruses supports their separation into distinct species.
May FJ , Clark DC , Pham K , Diviney SM , Williams DT , Field EJ , Kuno G , Chang GJ , Cheah WY , Setoh YX , Prow NA , Hobson-Peters J , Hall RA . J Gen Virol 2013 94 1462-7 ![]() The Kokobera virus group comprises mosquito-borne flaviviruses that cluster together phylogenetically. These viruses are unique to Australia and Papua New Guinea, and have been associated with a mild polyarticular disease in humans. Recent isolation of genetically diverse viruses within this group has prompted analysis of their genetic and phenotypic relationships. Phylogenetic analysis based on complete ORF, the envelope gene or the NS5/3' untranslated region supported the separation of the group into distinct species: Kokobera virus (KOKV), Stratford virus, New Mapoon virus, MK7979 and TS5273. Virulence studies in 3-week-old mice also provided the first evidence that a member of the KOKV group (MK7979) was neuroinvasive after intraperitoneal inoculation. In this context, our recent detection of KOKV group-specific antibodies in horses in the field suggests that these viruses should be considered in the epidemiology of flavivirus encephalitis in Australia. |
"The anticipation alone could kill you": past and potential clients' perspectives on HIV testing in non-health care settings
Joseph HA , Fasula AM , Morgan RL , Stuckey A , Alvarez ME , Margolis A , Stratford D , Dooley SW . AIDS Educ Prev 2011 23 (6) 577-94 HIV testing in non-health care settings is an effective strategy for increasing the proportion of persons aware of their infection. We conducted 21 focus groups with 186 past and potential clients in five U.S. cities to explore attitudes and experiences related to HIV counseling and testing in non-health care settings. Qualitative analysis yielded several key themes. HIV-related stigma and fear emerged as a main theme throughout the discussions. Knowing one's HIV status quickly and accurately was of primary importance; HIV prevention counseling was secondary. Participants prioritized a supportive, nonjudgmental environment with adequate privacy and confidentiality. Provision of immediate emotional support, medical information, and linkage services to HIV-infected clients were considered essential. Staff with HIV-specific skills to address clients' emotional and informational needs was considered a strength of non-health care testing programs. Frequently, however, participants compared non-health care settings unfavorably to health care settings regarding privacy, competency, confidentiality, and test accuracy. Recommendations for enhancing counseling and testing services in non-health care settings are discussed. |
Introduction to special supplement: monitoring and evaluation of HIV counseling, testing and referral (CTR) and HIV testing services
Stein R , Grimes TS , Malow R , Stratford D , Spielberg F , Holtgrave DR . AIDS Educ Prev 2011 23 1-6 The Centers for Disease Control and Prevention (CDC) estimate that 1.1 million people are living with HIV in the United States and approximately 56,000 new infections occur each year (CDC, 2008; Hall et al., 2008). By the end of 2006, an estimated 21% of people with HIV did not know that they were infected (calculated using extended back-calculation methods) (Campsmith et al., 2010). Many of those who do learn their serostatus are diagnosed in the late stages of the disease—approx-imately 38% of those who are diagnosed with HIV progress to AIDS within a year of their first positive HIV test. HIV transmission rates from persons who are aware of their seropositivity is approximately 3.3 compared to a rate of approximately 11.4 of those unaware of their seropositivity (Holtgrave, 2010). Furthermore, with high-quality care, a 25-year-old HIV-positive person can live an additional 39 years (Lohse, 2007). This information confirms the importance of routine HIV testing and early linkage to care for persons who test positive (CDC, 2009). |
Sexual and drug use risk behaviors of long-haul truck drivers and their commercial sex contacts in New Mexico
McCree DH , Cosgrove S , Stratford D , Valway S , Keller N , Vega-Hernandez J , Jenison SA . Public Health Rep 2010 125 (1) 52-60 OBJECTIVES: Long-haul truck drivers and their commercial sex contacts (CCs) have been associated with the spread of sexually transmitted infections (STls) in the developing world. However, there is a paucity of information about the STI risk behaviors of these populations in the U.S. We conducted a qualitative phase of a two-phase study to gather information about STI-related risk behaviors in drivers and their CCs in New Mexico. METHODS: Between July and September 2004, we conducted face-to-face unstructured and semistructured qualitative interviews at trucking venues, health department facilities, and a community-based organization to solicit information on sexual behavior and condom and illicit drug use. The interviews were audiotaped, transcribed, reviewed for quality control, and then coded and analyzed for emerging themes using NVivo® software. RESULTS: Thirty-three long-haul truck drivers and 15 CCs completed the interview. The truck drivers were mostly male and non-Hispanic white with a mean age of 41 years. The majority of the CCs were female, the largest percentage was Hispanic, and the mean age was 36 years. Data suggested risky sexual behavior and drug use (i.e., inconsistent condom use, illicit drug use including intravenous drug use, and the exchange of sex for drugs) that could facilitate STl/human immunodeficiency virus (HIV) and hepatitis virus transmission. Results also showed a low knowledge about STls and lack of access to general health care for both populations. CONCLUSIONS: Additional studies are needed to further assess risk and inform the development of prevention interventions and methods to provide STI/HIV and other medical services to these populations. |
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