Scientists search for a test to measure immunity from Covid infections

How protected are we against Covid-19? Scientists search for a test to measure immunity As mask mandates are lifted and restrictions removed in a step towards normalcy, having a test that could measure immunity would be a powerful tool to assess individual risk. Tasnim Ahmed, CNN CNN

...

Millions of Americans -- not just those with weakened immune systems -- are wondering about their protection after a winter of booster shots and Omicron infections. As mask mandates are lifted and restrictions removed in a step toward normalcy, a test to measure immunity would be a powerful tool to measure individual risk.

"The biggest reason I wanted to get my antibody titer checked is because I don't know how to assess risk," Sobieck said. "Anyone who is immunocompromised, from the beginning of this pandemic right through today, has very few tools to assess risk: if they're going to leave the house, when they're going to leave the house, how to interact with other people, which situations are OK."..

"More than 50% of transplant patients don't have enough immune response to be protected, even if they get not two but three doses of the vaccine that we use in the general population," said Dr. Dorry Segev, professor of surgery at New York University Langone Health. "For them, [an antibody titer] is a particularly poignant indicator of whether they have any protection at all." ...