one dose of the vaccine was 51% effective and two doses were 70.2% effective. CDC officials said the results showed the importance of at-risk populations getting vaccinated or getting a second ...

Getting the COVID-19 jab is going to be a one-two punch. Both Pfizer and Moderna's COVID-19 vaccines require two doses, the second administered three to four weeks after the first. Other vaccine ...

1 descendents, including KP.2, KP.3 and their close relatives. The CDC hopes that, by recommending additional doses to high-risk groups, people can be better protected from the virus year-round.

By Rebecca Robbins and Carl Zimmer The Biden administration announced on Monday that it would buy 3.2 million doses of a Covid-19 vaccine from the Maryland pharmaceutical company Novavax that is ...

one dose of the vaccine was 51% effective and two doses were 70.2% effective. CDC officials said the results showed the importance of at-risk populations getting vaccinated or getting a second ...