‘Breakthrough’ infections are rare, and just 2% result in COVID-19 deaths, CDC says
LOS ANGELES — In a four-month span during which the U.S. vaccination campaign was in a race against a spate of COVID-19 surges, a nationwide...
Why easing COVID-19 restrictions too soon could be a boon for coronavirus variants
Researchers show that worrisome genetic changes to the virus are most likely to take root and spread when infection rates surge, when many people have...
California thinks it can stop COVID by flooding poor areas with vaccine. Will it work?
The dramatic change in California's allocation strategy reflects the growing view from officials that they must more equitably balance vaccinating those most in danger of...
California’s coronavirus strain looks increasingly dangerous: ‘The devil is already here’
A coronavirus variant that became the dominant strain in California not only spreads more readily, it also evades antibodies generated by vaccines or prior infection...