Denmark: BA.1 infection followed by BA.2 reinfection can occur

BA.1, BA.2, Coronavirus, Infection, Omicron, PCR, Reinfection, Transmission, Vaccine Breakthrough, Vaccine Waning

From a total of 187 reinfection cases, we identified 47 instances of BA.2 reinfections shortly after a BA.1 infection, mostly in young unvaccinated individuals with mild disease not resulting in hospitalization or death.

In conclusion, we provide evidence that Omicron BA.2 reinfections do occur shortly after BA.1 infections, but are rare*.

SSI preprint on Medrxiv: Occurrence and significance of Omicron BA.1 infection followed by BA.2 reinfection


Caveat: It’s rare, *at the moment*…


Image by Andrew Martin from Pixabay

** This post was originally published on February 23, 2022 **