Covid-19 cases that return after antiviral treatment puzzle doctors
CNN
The pink line on Erin Blakeney's first positive Covid-19 test was so light that she almost didn't believe it, But there was no denying the fever and sore throat that developed overnight, just a few days after she and her husband attended a large memorial service in late March. The couple wore KN95 masks, but many others in attendance had not, even as the service stretched past 90 minutes.
Blakeney, a 43-year-old researcher at the University of Washington's School of Nursing, is a breast cancer survivor. The Seattle resident says she doesn't meet any strict definition of being immunocompromised, which can raise someone's Covid-19 risk. But she didn't want to take chances, because she's taking medications to prevent a cancer recurrence and she lost a family member to Covid-19 in November 2020.