Why are there so many new omicron sub-variants, like BA.4 and BA.5? Will I be reinfected? Is the virus mutating faster?
By now, many of us will be familiar with the omicron variant of SARS-CoV-2, the virus that causes COVID. This variant of concern has changed the course of the pandemic, leading to a dramatic rise in cases around the world.
May 6, 2022
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