Doctors Tell Me I Have COVID. Why Won't the Tests?

She's been sick for over a month with what doctors long-ago diagnosed as COVID. So why has Julia Ioffe repeatedly tested negative—and what does her search for answers tell us about the faith we invest in a testing system that's trickier than we think?

She's been sick for over a month with what doctors long-ago diagnosed as COVID. So why has Julia Ioffe repeatedly tested negative—and what does her search for answers tell us about the faith we invest in a testing system that's trickier than we think?