The latest Covid-19 vaccines from Pfizer and Moderna tend to be exceptionally effective at avoiding severe illness.
More than 4,000 active cases among inmates and 1,430 more among workers in California.
Public health authorities and drug manufacturers need to be open regarding the side effects of coronavirus vaccines, doctors say.
Both the Pfizer vaccine and the Moderna vaccine were developed with new technology that uses messenger RNA.
Coronavirus Covid-19 increased by 467 percent in Kansas counties, requiring masks in public places.
A surgical mask is a loose-fitting disposable mask that covers the nose and mouth of the wearer from contact with droplets.