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Expert warns new COVID variant sweeping world found in CAMay 4, 2023 -
The severity of COVID-19 illness declining as population immunity climbsApril 1, 2022 -
Health expert warns talking spreads BA.2 particles, urges indoor ventilationMarch 31, 2022 -
Omicron variant claims its first victim in the U.S.December 21, 2021 -
Omicron updates: Biden issues travel ban, new cases found in EuropeNovember 27, 2021 -
COVID variants are getting better at airborne transmission; studySeptember 18, 2021 -
As cases rise across the US, why isn't CA seeing a surge?March 31, 2021 -
Bay Area finds first case of troubling Brazil variantMarch 26, 2021 -
How worried should we be about coronavirus variants?March 11, 2021 -
Why isn’t the U.S. doing more to track coronavirus variants?February 11, 2021