Scientists are narrowing in on why some people keep avoiding Covid. BA.5 could end that luck.

What is keeping a minority of people from getting Covid? Disease experts are homing in on a few predictive factors. A majority of people in the U.S have had Covid-19 at least once — likely more than 70% of the country, White House Covid-19 Response Coordinator Ashish Jha said on Thursday, citing …

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