Research has shown that COVID-19 infections have the capability to cause unusual blood clots in mul…

Two small studies that have yet to be published give the first look at how Omicron may impact immun…

"Even though we don't like it we have to go on respecting this virus," David Nabarro told Sky News,…

Dr. Rochelle Walensky said that the CDC was preparing to update its website with information to hel…

Boosted people in Los Angeles had the most protection against COVID-19 infection and hospitalizatio…

Agents knew the cards were fake because they were laden with typos, unfinished words, and misspelle…

Charts for different age groups made it clear that people without vaccines were much more likely to…

Booster shots appear to be at least 90% effective against hospitalization for both Delta and Omicro…

The huge new CDC data set backs up what other studies have found: that Moderna is edging out Pfizer…

Dr. Anthony Fauci said Tuesday that the Omicron BA.5 subvariant "substantially evades" antibodies f…

Dr. Leana Wen said cloth masks were "little more than facial decorations." Three-ply medical masks …

Scientists have found that SARS-CoV-2, the virus behind Covid-19, triggers a dangerous immune respo…

Rep. Matt Gaetz has refused to say whether he is vaccinated but has claimed that getting COVID-19 w…

Protection against COVID-19 with symptoms was 70% for BA.2 two weeks after a third vaccine dose, UK…

Regardless of previous infection, two shots of Pfizer or AstraZeneca offered good protection agains…

An Israeli study found that vaccines and boosters lowered a parent's infectiousness within the home…

Data for the weeks ending January 1 and 8 showed that when infections spiked citywide, vaccinated N…

The CDC says N95s offer the best protection against the virus, but still stresses "any mask is bett…

These are Insider's biggest healthcare stories for July 29.

Vaccine protection held up against hospitalization, but waned after the second dose, per UK governm…