Frequent testing increases chance of detecting COVID-19 infections The chance of detecting the virus that causes COVID-19 increases with more frequent testing, no matter the type of test, a new study found. Both polymerase chain reaction and antigen tests, paired with rapid results reporting, can achieve 98% sensitivity if deployed at least every three days. This study shows that frequent testing can be really effective at catching COVID-19 infections and potentially blocking transmission. There are many places where vaccination is not yet widespread. With the rise of variants, testing remain...