"It's actually pushing back the time that people's COVID tests are coming up positive. So some people are testing at Day 1 and Day 2 and saying, 'Oh, it's negative, I don't have COVID,'" Hudson said. "If they probably tested themselves a couple of days later, there's a pretty good chance that it actually would turn out to be COVID."
Test immediately if you have symptoms of COVID-19, the U.S. Centers for Disease Control and Prevention says. If you take an at-home rapid test, also referred to as an antigen test, a positive result is usually reliable.
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