The effect of notification window length on the epidemiological impact of COVID-19 contact tracing mobile applications.

ABSTRACT:

Background

The reduction in SARS-CoV-2 transmission facilitated by mobile contact tracing applications (apps) depends both on the proportion of relevant contacts notified and on the probability that those contacts quarantine after notification. The proportion of relevant contacts notified depends upon the number of days preceding an infector's positive test that their contacts are notified, which we refer to as an app's notification window.

Methods

We use an epidemiological model of SARS-CoV-2 transmission that captures the profile of infection to consider the trade-off between notification window length and active app use. We focus on 5-day and 2-day windows, the notification windows of the NHS COVID-19 app in England and Wales before and after 2nd August 2021, respe

SUBMITTER: Leng T 

PROVIDER: S-EPMC9237034 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature