John Simwanza
5 Papers
John Simwanza is an academic researcher. The author has contributed to research in topics: Outbreak & Internal medicine. The author has an hindex of 1, co-authored 1 publications.
Chat about Author
Papers
Test negative case–control study of COVID-19 vaccine effectiveness for symptomatic SARS-CoV-2 infection among healthcare workers: Zambia, 2021–2022
Oliver Mweso,John Simwanza,Warren Malambo,D. Banda,Sombo Fwoloshi,Nyambe Sinyange,Young M Yoo,Leora R. Feldstein,Muzala. Kapina,Lloyd B Mulenga,Mazyanga L Mazaba Liwewe,K. Musonda,N. Kapata,Francis Dien Mwansa,Simon Agolory,Patricia Mupeta Bobo,J. Hines,Roma Chilengi +17 more
TL;DR: COVID-19 vaccines were effective in reducing symptomatic SARS-CoV-2 among Zambian HCWs when the Delta variant was circulating but not when Omicron was circulating, which could be related to immune evasive characteristics and/or waning immunity.
2
Attention to COVID 19 pandemic resulted in increased measles cases and deaths in Zambia
Kelvin Mwangilwa,Cephas Sialubanje,Musole Chipoya,Chilufya Susan Mulenga,Moses Mwale,Charles Chileshe,Danny Sinyange,Moses Banda,Priscilla Nkonde Gardner,Lilian Lamba,Precious C. Kalubula,John Simwanza,Davie Simwaba,N. Kapata,Jonathan Mwanza,P. Chipimo,Nyuma Mbewe,Nyambe Sinyange,Isaac Fwemba,Muzala Kapin’a,Roma Chilengi +20 more
TL;DR: The COVID-19 pandemic led to a 220% increase in measles mortality in Zambia, with predictors including younger age, IgM positivity, and lack of vaccination, highlighting the need for sustained measles vaccination efforts and improved healthcare access.
1
COVID-19 Vaccine Effectiveness during a Prison Outbreak when Omicron was the Dominant Circulating Variant—Zambia, December 2021
John Simwanza,Jonas Z Hines,Danny Sinyange,Nyambe Sinyange,Chilufya Susan Mulenga,S. Hanyinza,Patrick Sakubita,Nelia Langa,Haggai Nowa,Priscilla Gardner,Ngonda Saasa,Graham Chitempa,James B Simpungwe,Warren Malambo,Busiku Hamainza,Peter Jay Chipimo,Nathan Kapata,Muzala. Kapina,Kunda G. Musonda,Mazyanga L Mazaba Liwewe,Consity Mwale,Sombo Fwoloshi,Lloyd Mulenga,Simon Agolory,Victor Mukonka,Roma Chilengi +25 more
TL;DR: COVID-19 vaccination helped protect incarcerated persons against SARS-CoV-2 infection during an outbreak while Omicron was the dominant variant in Zambia.
Trends in SARS-CoV-2 seroprevalence among pregnant women attending first antenatal care visits in Zambia: a repeated cross-sectional survey, 2021-2022
Elizabeth Heilmann,T. Tembo,Sombo Fwoloshi,B. Kabamba,F. Chilambe,K. Kalenga,Mpanji Siwingwa,C. Mulube,V. Seffren,C. Bolton-Moore,John Simwanza,S. Yingst,R. Yadav,E. Rogier,A. Auld,S. Agolory,Muzala. Kapina,J. R. Gutman,T. Savory,C. Kangale,L. Mulenga,I. Sikazwe,J. Hines +22 more
TL;DR: Capturing COVID-19 vaccination status and using a multiplex bead assay with anti-nucleocapsid and anti-RBD targets facilitated distinguishing infection-induced versus vaccine-induced antibody responses during a period of increasing COVID-19 vaccine coverage in Zambia.
Evaluating the impact of COVID-19 on routine childhood immunizations coverage in Zambia
Kelvin Mwangilwa,Charles Chileshe,John Simwanza,Musole Chipoya,Davie Simwaba,N. Kapata,Mazyanga L. Mazaba,Nyuma Mbewe,Kapina Muzala,Nyambe Sinyange,Isaac Fwemba,Roma Chilengi +11 more