Total Effect Analysis of Vaccination on Household Transmission in the Office for National Statistics COVID-19 Infection Survey

TL;DR

This study analyzes household transmission of COVID-19, demonstrating that vaccination significantly reduces secondary attack rates by approximately half, based on data from the UK Office for National Statistics survey.

Contribution

It provides a detailed analysis of how vaccination timing impacts household transmission, revealing a substantial reduction in secondary cases post-vaccination.

Findings

Vaccination halves household secondary attack rates.

Timing of vaccination correlates with transmission reduction.

Data derived from the UK COVID-19 Infection Survey.

Abstract

We investigate the distribution of numbers of secondary cases in households in the Office for National Statistics COVID-19 Infection Survey (ONS CIS), stratified by timing of vaccination and infection in the households. This shows a total effect of a statistically significant approximate halving of the secondary attack rate in households following vaccination.