A country-specific model of COVID-19 vaccination coverage needed for herd immunity in adult only or population wide vaccination programme.

ABSTRACT: We present a country specific method to calculate the COVID-19 vaccination coverage needed for herd immunity by considering age structure, age group-specific contact patterns, relative infectivity and susceptibility of children to adults, vaccination effectiveness and seroprevalence prior to vaccination. We find that across all six countries, vaccination of adults age 60 and above has little impact on R_eff and this is could be due to the smaller number of contacts between this age group and the rest of the population according to the contact matrices used. If R₀ is above 6, herd immunity by vaccine alone is unattainable for most countries either if vaccination is only available for adults or that vaccine effectiveness is lower at 65% against symptomatic infections. In

SUBMITTER: Goh FT 

PROVIDER: S-EPMC9119722 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature