Federally run mass vaccination sites will pause the use of the J&J shot, and states and other providers are expected to follow
'It is becoming more and more difficult to affirm that there isn't a cause-and-effect relationship between AstraZeneca vaccines and the very rare cases of blood clots associated with a low level of platelets'
Prime Minister Boris Johnson confirmed that the government will test out a contentious "vaccine passport" system as a tool to help travel and large events return safely.
The drugmaker said it had analyzed more data from that study and concluded the vaccine is 76 percent effective in preventing symptomatic COVID-19
The back-and-forth over the latest release is not the first time the company has run into problems
The CDC also advised vaccinated people to get tested if they develop symptoms that could be related to COVID-19
Such guidance would address a flood of questions coming in from people who have been fully vaccinated against COVID-19: Do I still have to wear a mask? Can I go to a bar now? Can I finally see my grandchildren?
The Pfizer vaccine already is cleared for use starting at age 16