Why UCSF's Bob Wachter says COVID variant BA.5 is 'a different beast' San Francisco ChronicleThis July 4th, COVID is still killing hundreds of Americans each day Fox NewsAre omicron symptoms worse if you’ve never had COVID before? Deseret NewsVirus outlook: Wary US keeps eye on transformed COVID-19 St. Louis Post-DispatchIs Omicron BA.5 'Worst Version' Of Covid-19 Coronavirus Seen?