Two doses of the Pfizer-BioNTech covid-19 vaccine provide more than 95% protection against infection, hospital admission, and death, including among older people, a peer reviewed study […]
The efficacy of different covid-19 vaccines against variants of concern, including those first identified in the UK and South Africa, will be assessed by Public Health […]
With around 30 percent of the U.S. population now fully vaccinated, the rate of daily vaccinations has started to slow, raising concerns that greater efforts and […]