Effectiveness of four vaccines in preventing SARS-CoV-2 infection in Almaty, Kazakhstan in 2021: retrospective population-based cohort study

• Main Authors: Dilyara Nabirova (Author), Roberta Horth (Author), Manar Smagul (Author), Gaukhar Nukenova (Author), Aizhan Yesmagambetova (Author), Daniel Singer (Author), Alden Henderson (Author), Alexey Tsoy (Author)
• Format: Book
• Published: Frontiers Media S.A., 2023-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

BackgroundIn February 2021 Kazakhstan began offering COVID-19 vaccines to adults. Breakthrough SARS-CoV-2 infections raised concerns about real-world vaccine effectiveness. We aimed to evaluate effectiveness of four vaccines against SARS-CoV-2 infection.MethodsWe conducted a retrospective cohort ana...