Variant Monitoring

WHO Guidelines XFG Variant Current Risk Assessment NB.1.8.1 Nimbus Global Tracking GISAID Public Health Response Expert Opinions INSACOG Data H3N2 Surveillance WHO Classification Global Health Organizations Omicron Variants NB.1.8.1 Variant WHO Watchlist BA.3.2 Variant XEC Monitoring SARS-CoV-2 Variants