COVID-19 vaccines effective against California coronavirus variant: study

Researchers in a new study found that COVID-19 vaccines are effective against a coronavirus variant that first emerged in California and has since become the dominant strain in the Golden State.…

Study declares AOC one of the least effective members of Congress

She’s the queen of Twitter — but less successful at lawmaking. Rep. Alexandria Ocasio-Cortez, D-N.Y., was among the least effective members of the last Congress, according to a new survey from…

Pfizer says COVID-19 vaccine 100% effective, safe in kids as young as 12

Pfizer and BioNTech announced Wednesday that a Phase 3 trial involving its coronavirus vaccine in adolescents ages 12 to 15 was found to be safe and 100% effective. A press…

COVID-19 vaccines are safe and effective in pregnancy, new study shows

Editor’s note: The study described in this story was published in the American Journal of Obstetrics and Gynecology (AJOG) on March 25. The original story was based on the preprint and published on…

AstraZeneca 79% effective in preventing symptomatic COVID-19, company says

AstraZeneca said in a statement early Monday the Phase III trial of its COVID-19 vaccine –which was conducted in the U.S.—showed a 79% effectiveness in preventing symptomatic infections and a…

AstraZeneca COVID-19 vaccine ‘safe and effective’ amid blood clotting reports, EU regulator says

A safety committee with Europe’s regulator concluded AstraZeneca’s COVID-19 vaccine is safe and effective, with no ties to an overall increased risk of blood clots in vaccinated individuals. However, a definitive link…

AstraZeneca, Pfizer COVID-19 vaccines effective against variants, Oxford University study shows

A coronavirus variant first detected in Brazil poses less of a threat to vaccines developed by AstraZeneca and Pfizer than researchers first worried, according to new findings announced Thursday by Oxford University. “The results…

Why these masks are more effective at stopping COVID spread

Cotton face masks are proving more effective against the spread of the coronavirus than previously thought, a new study found. Even under humid conditions — which is typically the case,…

Pfizer COVID-19 vaccine may be less effective in obese people, study finds

Pfizer’s vaccine may be less effective in protecting obese people from coronavirus, scientists said. Researchers in Rome found that obese people who had received two doses of the vaccine generated…

Pfizer COVID-19 vaccine 94% effective in real-world conditions: study

A coronavirus vaccine developed by Pfizer and BioNTech showed to drop symptomatic COVID-19 by 94%, per new research out of Israel. The peer-reviewed results offer a first look at effectiveness in real-world…