What Does Covid Immunity Look Like?

Here’s the latest news from the global pandemic.

People who get vaccinated may require boosters within a year, top U.S. infectious disease specialist Anthony Fauci said last week. Then he reneged, saying “I’m not sure we’re going to need boosters,” and “if so, I don’t know at what point following the vaccinations we might need it. I think that’s still uncharted waters.”

The vaccines are so new that no one knows exactly how soon their protection will wane. Mounting evidence suggests it will last at least six months, but beyond that remains unclear – and there is no definitive test for anti-coronavirus defenses.

Scientists are racing to figure out the so-called correlates of protection against Covid; in other words, which test results assure immunity.