Experts say that developing a precise and accurate antibody test actually proving that a person is immune to the coronavirus may take as long as developing and distributing a vaccine. MrJDWalsh reports
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“It is likely — though we need to prove it — that once you’ve been infected, and you have an antibody profile, that you are very likely protected against subsequent challenge to the same virus,” Fauci said on Today. “Which means you may have a cohort of people who are actually protected, who have more of a chance of getting back into the normality of society.”
“The bottom line is there is a lot that remains unknown about antibody responses and immunity to COVID in general,” said Angela Rasmussen, a virologist at Columbia University. Because the research is moving at breakneck speed, antibody-test developers are not working on solid ground. For example, they still don’t know for certain if IgG is the key to fighting off COVID-19. Immune responses are complicated and other factors, like T cells, may be responsible for beating back the disease. “Having an antibody response doesn’t necessarily mean a good antibody response,” said Dr.
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