Some people just don't get COVID, despite being exposed. Researchers are trying to unravel the mystery of the 'never COVID' population.
B-cell and T-cell responseThere's no compelling evidence one way or the other yet, Brooks says. But, infectious diseases often prompt some longer-term immune memory that can provide some assistance, he adds.
It's also possible people didn't realize they had a prior asymptomatic COVID infection and gained enough immune cell memory to offer some protection.may make someone's immune system more or less susceptible to the virus. "I think there's probably something approaching 20 different genes already described that affect the likelihood of developing severe infection," Openshaw says."is seen in other diseases where people have one or multiple factors that interfere with the virus binding to cells or being transported within," says Gigi Gronvall, an immunologist and senior scholar at the Johns Hopkins Center for Health Security.
This rapidly evolving field offers promising research but "really isn't ready for prime time yet," Brooks says.
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