Science
New Covid Variant PJ.2.1 Spreads in US as Health Officials Step Up Watch
PJ.2.1, a new SARS-CoV-2 lineage first detected in Canada in May, has been found in several US states. Health officials…
PJ.2.1, a new SARS-CoV-2 lineage first detected in Canada in May, has been found in several US states. Health officials…