How often should we be testing?

How often should we be testing?

Testing at least twice a week maximizes SHIELD’s ability to find infections early and break the  transmission chain. However, if contact tracing is strong at your location, weekly testing  can be effective.

The more frequently someone is tested, the less time they will be infectious and be able to spread the virus. When testing twice a week, an infection will be detected, on average, the day before peak infectiousness. With weekly testing, infections will be detected, on average, 1-2 days after peak infectiousness. Our research also shows that testing at least twice a week means that >95% of infections will be detected; weekly testing can miss 1 in 10 infections.