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Short M, Dobson J, Day G, Lefferts B, Singleton R, Keck J. "You can feel the fresh air … " Rural Alaska Native household perceptions of home air purifiers and health. Int J Circumpolar Health 2024; 83:2335702. [PMID: 38546171 PMCID: PMC10984226 DOI: 10.1080/22423982.2024.2335702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 03/22/2024] [Indexed: 04/04/2024] Open
Abstract
Alaska Native and American Indian children experience frequent respiratory illness. Indoor air quality is associated with the severity and frequency of respiratory infections in children. High efficiency particulate air (HEPA) purifiers effectively improve indoor air quality and may protect respiratory health. In 2019, the Yukon-Kuskokwim Health Corporation implemented a pilot programme that provided education and HEPA purifiers to households of children with chronic lung conditions. The team evaluated HEPA purifier acceptability and use by interviewing representatives from 11 households that participated in the pilot programme. All interviewees reported improvement in their child's health, and some believed that the health of other household members was also improved because of the HEPA purifier. Interviewees reported that the HEPA purifiers were easy to use, quiet, and not expensive to run. Five of 11 households were still using the HEPA purifier at the time of the interview, which was about three years after receipt of the unit. The most common reasons for discontinuing use were equipment failure and lack of replacement filter, suggesting that programme support could increase sustainability. Our evaluation suggests that HEPA purifiers are acceptable and feasible for use in rural Alaska Native households.
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Affiliation(s)
- Madilyn Short
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
- Department of Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Jennifer Dobson
- Department of Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
- Office of Environmental Health and Engineering, Yukon-Kuskokwim Health Corporation, Bethel, AK, USA
| | - Gretchen Day
- Department of Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Brian Lefferts
- Office of Environmental Health and Engineering, Yukon-Kuskokwim Health Corporation, Bethel, AK, USA
| | - Rosalyn Singleton
- Department of Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - James Keck
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
- Department of Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
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Lefferts B, Bruden D, Plumb ID, Hodges E, Bates E, January G, Bruce MG. Effectiveness of the COVID-19 vaccines on preventing symptomatic SARS-CoV-2 infections and hospitalizations in Southwestern Alaska, January-December 2021. Vaccine 2023; 41:3544-3549. [PMID: 37150620 PMCID: PMC10150184 DOI: 10.1016/j.vaccine.2023.04.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/09/2023]
Abstract
The population in rural southwest Alaska has been disproportionately affected by COVID-19. To assess the benefit of COVID-19 vaccines, we analyzed data from the regional health system. We estimated vaccine effectiveness (VE) during January 16-December 3, 2021, against symptomatic SARS-CoV-2 infection after a primary series or booster dose, and overall VE against hospitalization. VE of a primary series against symptomatic infection among adult residents was 91.3% (95% CI: 85.7, 95.2) during January 16-May 7, 2021, 50.3% (95% CI, 41.1%-58.8%) during July 17-September 24, and 37.0% (95% CI, 27.8-45.0) during September 25-December 3, 2021; VE of a booster dose during September 25-December 3, 2021, was 92.1% (95% CI: 87.2-95.2). During the overall study period, VE against hospitalization was 91.9% (95% CI: 85.4-95.5). COVID-19 vaccination offered strong protection against hospitalization and a booster dose restored protection against symptomatic infection.
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Affiliation(s)
| | - Dana Bruden
- Centers for Disease Control & Prevention, United States
| | - Ian D Plumb
- Centers for Disease Control & Prevention, United States
| | - Ellen Hodges
- Yukon-Kuskokwim Health Corporation, United States
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Fuente D, Mosites E, Bressler S, Eichelberger L, Lefferts B, January G, Singleton R, Thomas T. Health-related economic benefits of universal access to piped water in Arctic communities: Estimates for the Yukon-Kuskokwim Delta region of Alaska. Int J Hyg Environ Health 2022; 240:113915. [DOI: 10.1016/j.ijheh.2021.113915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 11/25/2022]
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Lefferts B, Blake I, Bruden D, Hagen MB, Hodges E, Kirking HL, Bates E, Hoeldt A, Lamont B, Saydah S, MacNeil A, Bruce MG, Plumb ID. Antigen Test Positivity After COVID-19 Isolation - Yukon-Kuskokwim Delta Region, Alaska, January-February 2022. MMWR Morb Mortal Wkly Rep 2022; 71:293-298. [PMID: 35202352 DOI: 10.15585/mmwr.mm7108a3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Isolation is recommended during acute infection with SARS-CoV-2, the virus that causes COVID-19, but the duration of infectiousness varies among individual persons. Rapid antigen test results have been correlated with detection of viable virus (1-3) and might inform isolation guidance, but data are limited for the recently emerged SARS-CoV-2 B.1.1.529 (Omicron) variant. On January 5, 2022, the Yukon-Kuskokwim Health Corporation (YKHC) recommended that persons with SARS-CoV-2 infection isolate for 10 days after symptom onset (or, for asymptomatic persons, 10 days after a positive nucleic acid amplification or antigen test result). However, isolation could end after 5-9 days if symptoms were resolving or absent, fever was absent for ≥24 hours without fever-reducing medications, and an Abbott BinaxNOW COVID-19 Ag (BinaxNOW) rapid antigen test result was negative. Antigen test results and associated individual characteristics were analyzed among 3,502 infections reported to YKHC during January 1-February 9, 2022. After 5-9 days, 396 of 729 persons evaluated (54.3%) had a positive antigen test result, with a declining percentage positive over time. In a multivariable model, a positive antigen test result was more likely after 5 days compared with 9 days (adjusted odds ratio [aOR] = 6.39) or after symptomatic infection (aOR = 9.63), and less likely after previous infection (aOR = 0.30), receipt of a primary COVID-19 vaccination series (aOR = 0.60), or after both previous infection and receipt of a primary COVID-19 vaccination series (aOR = 0.17). Antigen tests might be a useful tool to guide recommendations for isolation after SARS-CoV-2 infection. During the 10 days after infection, persons might be infectious to others and are recommended to wear a well-fitting mask when around others, even if ending isolation after 5 days.
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Hodges E, Lefferts B, Bates E, Desnoyers C, Bruden D, Bruce M, McLaughlin J. Use of Rapid Antigen Testing for SARS-CoV-2 in Remote Communities - Yukon-Kuskokwim Delta Region, Alaska, September 15, 2020-March 1, 2021. MMWR Morb Mortal Wkly Rep 2021; 70:1120-1123. [PMID: 34411078 PMCID: PMC8375707 DOI: 10.15585/mmwr.mm7033a3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Controlling the spread of SARS-CoV-2, the virus that causes COVID-19, in Alaska is challenging. Alaska includes many remote and isolated villages with small populations (ranging from 15 to >1,000 persons) that are accessible only by air from larger communities. Until rapid point-of-care testing became widely available, a primary challenge in the diagnosis of COVID-19 in rural Alaska was slow turnaround times for SARS-CoV-2 test results, attributable to the need to transport specimens to testing facilities. To provide more timely test results and isolation of cases, the Yukon Kuskokwim Health Corporation (YKHC) introduced Abbott BinaxNOW COVID-19 Ag rapid antigen test (BinaxNOW) on November 9, 2020, in the rural Yukon-Kuskokwim Delta region in southwestern Alaska. To evaluate the impact of implementing antigen testing, YKHC reviewed the results of 54,981 antigen and molecular tests for SARS-CoV-2 performed in the Yukon-Kuskokwim Delta during September 15, 2020-March 1, 2021. Introduction of rapid, point-of-care testing was followed by a more than threefold reduction in daily SARS-CoV-2 case rates during approximately 1 month before the introduction of COVID-19 vaccination. The median turnaround time for SARS-CoV-2 test results decreased by >30%, from 6.4 days during September 15-November 8, 2020, to 4.4 days during November 9, 2020-March 1, 2021 (p<0.001). Daily incidence decreased 65% after the introduction of BinaxNOW, from 342 cases per 100,000 population during the week of November 9 to 119 during the week of December 13 (p<0.001). These findings indicate that point-of-care rapid antigen testing can be a valuable tool in reducing turnaround times in rural communities where local access to laboratory-based nucleic acid amplification testing (NAAT) is not readily available and could thereby reduce transmission by facilitating rapid isolation of infected persons, contact tracing, and implementation of local mitigation strategies.
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Mosites E, Lefferts B, Seeman S, January G, Dobson J, Fuente D, Bruce M, Thomas T, Hennessy T. Community water service and incidence of respiratory, skin, and gastrointestinal infections in rural Alaska, 2013-2015. Int J Hyg Environ Health 2020; 225:113475. [PMID: 32058938 DOI: 10.1016/j.ijheh.2020.113475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/22/2020] [Accepted: 01/29/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Communities in rural Alaska have access to multiple types of water service (piped, vehicle-hauled, and self-hauled) and experience varying levels of water service coverage. We assessed the incidence rate of inpatient and outpatient infectious disease visits among communities with different water service types and coverage levels. METHODS We classified ICD-9 codes for inpatient and outpatient visits to the Yukon-Kuskokwim Health Corporation facilities between 2013 and 2015 into six infectious disease categories. Using Poisson models, we compared the incidence of visits in each category across communities with differing water service coverage levels as defined by water service billing data for the same years. Using census data, we adjusted for community median household income, median age, crowding, and health aide staffing. RESULTS We included 48 communities in this analysis. After adjusting for possible confounders, each 10% increase in piped water coverage was associated with a 4% lower incidence of pneumonia/influenza visits (adjusted incidence rate ratio [IRR] 0.96, 95% CI 0.93-0.98), a 2% lower incidence of other respiratory infection visits (adjusted IRR 0.98, 95% CI 0.97-0.99), an 8% lower incidence of methicillin-resistant Staphylococcus visits (adjusted IRR 0.92, 95% CI 0.87-0.97), and a 4% lower incidence of other skin infections visits (adjusted IRR 0.96, 95% CI 0.95-0.98). Each 10% increase in vehicle-hauled water coverage was associated with a 2% lower incidence of respiratory infection visits (adjusted IRR 0.98, 95% CI 0.97-0.996) and a 3% lower incidence of skin infection visits (adjusted IRR 0.97, 95% CI 0.95-0.99), also after adjustment. CONCLUSIONS Higher levels of water service coverage were associated with lower incidence rates of visits for several infectious disease categories. These associations were more pronounced for communities with piped water service compared to vehicle-hauled water service.
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Affiliation(s)
- Emily Mosites
- Arctic Investigations Program, Division of Preparedness and Emerging Infections, National Center for Zoonotic and Emerging Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, AK, USA.
| | - Brian Lefferts
- Office of Environmental Health and Engineering, Yukon-Kuskokwim Health Corporation, Bethel, AK, USA
| | - Sara Seeman
- Arctic Investigations Program, Division of Preparedness and Emerging Infections, National Center for Zoonotic and Emerging Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, AK, USA
| | - Gerald January
- Records and Verification Electronic Network (RAVEN) Team, Yukon-Kuskokwim Health Corporation, Bethel, AK, USA
| | - Jennifer Dobson
- Office of Environmental Health and Engineering, Yukon-Kuskokwim Health Corporation, Bethel, AK, USA
| | - David Fuente
- School of Earth, Ocean, and Environment, College of Arts and Sciences, University of South Carolina, Columbia, SC, USA
| | - Michael Bruce
- Arctic Investigations Program, Division of Preparedness and Emerging Infections, National Center for Zoonotic and Emerging Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, AK, USA
| | - Timothy Thomas
- Clinical Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Thomas Hennessy
- Arctic Investigations Program, Division of Preparedness and Emerging Infections, National Center for Zoonotic and Emerging Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, AK, USA
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Ramey AM, Pearce JM, Reeves AB, Poulson RL, Dobson J, Lefferts B, Spragens K, Stallknecht DE. Surveillance for Eurasian-origin and intercontinental reassortant highly pathogenic influenza A viruses in Alaska, spring and summer 2015. Virol J 2016; 13:55. [PMID: 27036114 PMCID: PMC4815243 DOI: 10.1186/s12985-016-0511-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 03/21/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Eurasian-origin and intercontinental reassortant highly pathogenic (HP) influenza A viruses (IAVs) were first detected in North America in wild, captive, and domestic birds during November-December 2014. Detections of HP viruses in wild birds in the contiguous United States and southern Canadian provinces continued into winter and spring of 2015 raising concerns that migratory birds could potentially disperse viruses to more northerly breeding areas where they could be maintained to eventually seed future poultry outbreaks. RESULTS We sampled 1,129 wild birds on the Yukon-Kuskokwim Delta, Alaska, one of the largest breeding areas for waterfowl in North America, during spring and summer of 2015 to test for Eurasian lineage and intercontinental reassortant HP H5 IAVs and potential progeny viruses. We did not detect HP IAVs in our sample collection from western Alaska; however, we isolated five low pathogenic (LP) viruses. Four isolates were of the H6N1 (n = 2), H6N2, and H9N2 combined subtypes whereas the fifth isolate was a mixed infection that included H3 and N7 gene segments. Genetic characterization of these five LP IAVs isolated from cackling (Branta hutchinsii; n = 2) and greater white-fronted geese (Anser albifrons; n = 3), revealed three viral gene segments sharing high nucleotide identity with HP H5 viruses recently detected in North America. Additionally, one of the five isolates was comprised of multiple Eurasian lineage gene segments. CONCLUSIONS Our results did not provide direct evidence for circulation of HP IAVs in the Yukon-Kuskokwim Delta region of Alaska during spring and summer of 2015. Prevalence and genetic characteristics of LP IAVs during the sampling period are concordant with previous findings of relatively low viral prevalence in geese during spring, non-detection of IAVs in geese during summer, and evidence for intercontinental exchange of viruses in western Alaska.
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Affiliation(s)
- Andrew M Ramey
- U.S. Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, AK, 99508, USA.
| | - John M Pearce
- U.S. Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, AK, 99508, USA
| | - Andrew B Reeves
- U.S. Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, AK, 99508, USA
| | - Rebecca L Poulson
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, 589 D. W. Brooks Drive, University of Georgia, Athens, GA, 30602, USA
| | - Jennifer Dobson
- Yukon-Kuskokwim Health Corporation, 900 Chief Eddie Hoffman Highway, Bethel, AK, 99559, USA
| | - Brian Lefferts
- Yukon-Kuskokwim Health Corporation, 900 Chief Eddie Hoffman Highway, Bethel, AK, 99559, USA
| | - Kyle Spragens
- U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary, 505 Azuar Drive, Vallejo, CA, 94592, USA
- U.S. Fish and Wildlife Service, Yukon Delta National Wildlife Refuge, 807 Chief Eddie Hoffman Highway, Bethel, AK, 99559, USA
| | - David E Stallknecht
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, 589 D. W. Brooks Drive, University of Georgia, Athens, GA, 30602, USA
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