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Understanding the immunological landscape of England during SARS-CoV2 Omicron variant wave
Joseph Shingleton
STEVEN DYKE
Archie Herrick
Thomas Finnie
Acceso Abierto
Atribución-NoComercial
https://doi.org/10.1101/2022.02.21.22271270
https://www.medrxiv.org/content/10.1101/2022.02.21.22271270v1
Understanding the scale of the threat posed by SARS-CoV2 B.1.1.529, or Omicron , variant formed a key problem in public health in the early part of 2022. Early evidence indicated that the variant was more transmissible and less severe than previous variants. As the virus was expected to spread quickly through the population of England, it was important that some understanding of the immunological landscape of the country was developed. This paper attempts to estimate the number of people with good immunity to the Omicron variant, defined as either recent infection with two doses of vaccine, or two doses of vaccine with a recent booster dose. To achieve this, we use a process of iterative proportional fitting to estimate the cell values of a contingency table, using national immunisation records and real-time model infection estimates as marginal values. Our results indicate that, despite the increased risk of immune evasion with the Omicron variant, a high proportion of England’s population had good immunity to the virus, particularly in older age groups. However, low rates of immunity in younger populations may allow endemic infection to persist for some time.
medRxiv and bioRxiv
22-02-2022
Preimpreso
https://www.medrxiv.org/
Inglés
Epidemia COVID-19
Público en general
VIRUS RESPIRATORIOS
Versión publicada
publishedVersion - Versión publicada
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