Diseases, Conditions, Syndromes

Pfizer says third shot of vaccine boosts COVID protection

New data show that protection from both doses of the Pfizer COVID-19 vaccine decreases slightly over time, but that a third dose significantly boosts levels of antibodies against several variants of the virus, including the ...


Will you need a COVID-19 booster? What we know so far

Is a booster shot for your COVID-19 vaccine in your future? While it seems like only yesterday that people were calculating the date they could feel fully protected by their vaccination, now there's talk that our safety may ...

Diseases, Conditions, Syndromes

NYC to require vaccines or weekly testing for city workers

New York City will require all of its municipal workers—including teachers and police officers—to get coronavirus vaccines by mid-September or face weekly COVID-19 testing, Mayor Bill de Blasio announced Monday.