XBB.1.16 is the second most common variant in the US XBB.1.16 has debuted on the CDC Covid variant list today in SECOND PLACE.… ...More... April 14, 2023April 15, 2023 Coronaheadsup.com America, Coronavirus, Genome, Healthcare, Infection, infection, Recombination, Reinfection, Testing, Transmission, USA, XBB.1.16