delta variant

COVID-19 nasal spray? Treatment closer to reality thanks to UC Berkeley research

Studies suggest CDC COVID-19 isolation guidance too short

Expert warns mask recommendations not good enough as omicron strains drive surge

As BA.5 spreads and doses expire, expert says vaccination need remains

COVID-19 reinfection can happen multiple times of the course of your life, says expert

Bay Area stops short of requiring masks amid state-leading COVID-19 surge

Is it time for an updated COVID vaccine?

Osterholm says ‘there will be more variants’ and we need to be prepared

Next possible COVID-19 variant hard to predict as BA.2 spreads across Europe

Would we be ready for another pandemic today? Osterholm says no