Researchers found prior exposure to SARS-CoV-2 Omicron sub-variants BA.1/BA.2 reduced the risk of breakthrough infection by ...

But the new Omicron subvariants are shattering that trend. BA.5 has caused more people to catch COVID for the second or third ...

Here’s what you need to know about Covid reinfection. How quickly can you get reinfected with Covid? Research has shown that ...

THE CURRENT dominant strain of Covid is more than three times more likely to put you in hospital than a previous variant, a ...

And long COVID remains poorly understood. As COVID becomes a fixture of American life, here’s what infectious disease experts ...

We do not know about the clinical severity of BA.4 and BA.5 in comparison to our other Omicron subvariants,” CDC Director Dr.

Reinfections and severe outcomes may be more common with the BA.5 omicron variant compared to other coronavirus variants. Vaccines are also less effective against BA.5.

The subvariant could be more likely to result in reinfection of a person irrespective of whether they are vaccinated, the ...

People who've had Omicron could have a high level of protection against the BA.4 and BA.5 variants that are now sweeping the ...

They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review ...

Subsequent coronavirus infections were associated with higher risk of potentially serious health problems or death from COVID ...