Near-Complete SARS-CoV-2 Seroprevalence among Rural and Urban Kenyans despite Significant Vaccine Hesitancy and Refusal.

Autor:	Nasimiyu C; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA.; KAVI-Institute for Clinical Research, University of Nairobi, Nairobi 00202, Kenya., Ngere I; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Dawa J; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Amoth P; Directorate of Public Health, Kenya Ministry of Health, Nairobi 00100, Kenya., Oluga O; Directorate of Health, Nairobi Metropolitan Services, Nairobi 00100, Kenya., Ngunu C; Directorate of Health, Nairobi Metropolitan Services, Nairobi 00100, Kenya., Mirieri H; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Gachohi J; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA.; School of Public Health, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya., Dayan M; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Liku N; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Njoroge R; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Odinoh R; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Owaka S; Center for Virus Research, Kenya Medical Research Institute, Nairobi 00200, Kenya., Khamadi SA; Center for Virus Research, Kenya Medical Research Institute, Nairobi 00200, Kenya., Konongoi SL; Center for Virus Research, Kenya Medical Research Institute, Nairobi 00200, Kenya., Galo S; Department of Health Services, County Government of Kakamega, Kakamega 50100, Kenya., Elamenya L; Department of Health Services, County Government of Kakamega, Kakamega 50100, Kenya., Mureithi M; KAVI-Institute for Clinical Research, University of Nairobi, Nairobi 00202, Kenya., Anzala O; KAVI-Institute for Clinical Research, University of Nairobi, Nairobi 00202, Kenya., Breiman R; Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA., Osoro E; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA., Njenga MK; Global Health Program, Washington State University (WSU), Nairobi 00100, Kenya.; Paul G. Allen School of Global Health, Washington State University (WSU), Pullman, WA 99163, USA.
Jazyk:	angličtina
Zdroj:	Vaccines [Vaccines (Basel)] 2022 Dec 28; Vol. 11 (1). Date of Electronic Publication: 2022 Dec 28.
DOI:	10.3390/vaccines11010068
Abstrakt:	Considering the early inequity in global COVID-19 vaccine distribution, we compared the level of population immunity to SARS-CoV-2 with vaccine uptake and refusal between rural and urban Kenya two years after the pandemic onset. A population-based seroprevalence study was conducted in the city of Nairobi (n = 781) and a rural western county (n = 810) between January and February 2022. The overall SARS-CoV-2 seroprevalence was 90.2% (95% CI, 88.6−91.2%), including 96.7% (95% CI, 95.2−97.9%) among urban and 83.6% (95% CI, 80.6−86.0%) among rural populations. A comparison of immunity profiles showed that >50% of the rural population were strongly immunoreactive compared to <20% of the urban population, suggesting more recent infections or vaccinations in the rural population. More than 45% of the vaccine-eligible (≥18 years old) persons had not taken a single dose of the vaccine (hesitancy), including 47.6% and 46.9% of urban and rural participants, respectively. Vaccine refusal was reported in 19.6% of urban and 15.6% of rural participants, attributed to concern about vaccine safety (>75%), inadequate information (26%), and concern about vaccine effectiveness (9%). Less than 2% of vaccine refusers cited religious or cultural beliefs. These findings indicate that despite vaccine inequity, hesitancy, and refusal, herd immunity had been achieved in Kenya and likely other African countries by early 2022, with natural infections likely contributing to most of this immunity. However, vaccine campaigns should be sustained due to the need for repeat boosters associated with waning of SARS-CoV-2 immunity and emergence of immune-evading virus variants.
Databáze:	MEDLINE
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