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 data from the Centers for Disease Control and Prevention.

Many have been infected multiple times. In a study that has not been peer viewed that looked at 257,000 U.S. veterans who'd contracted Covid at least once, 12% had a reinfection by April and about 1% had been infected three times or more.

This raises an obvious question: What is keeping that shrinking minority of people from getting sick?

BA.5 Covid subvariant becomes dominant strain in U.S.July 14, 202203:09Disease experts are homing in on a few predictive factors beyond individual behavior, including genetics, T cell immunity and the effects of inflammatory conditions like allergies and asthma.

But even as experts learn more about the reasons people may be better equipped to avoid Covid, they caution that some of these defenses may not hold up against the latest version of omicron, BA.5, which is remarkably good at spreading and evading vaccine protection.

https://www.nbcnews.com/health/health-news/why-people-keep-avoiding-covid-ba5-rcna39442

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