Strengthening case for natural origin.
A lower dose of the vaccine showed to be safe, well-tolerated and effective in spurring antibodies in kids between 5 to 11 years of age, the company announced.
Results from a massive study in Bangladesh unequivocally show that surgical masks reduce the spread of SARS-CoV-2, scientists say.
People who received a booster Johnson & Johnson COVID-19 vaccine six to eight months after their initial dose had a nine-fold increase in antibodies, according to clinical trial results.
These mutations may make delta the most transmissible coronavirus variant yet. Here's how the variant became so formidable.
The Food and Drug Administration granted full approval to Pfizer-BioNTech's COVID-19 vaccine on Monday (Aug.23). It's the first COVID-19 vaccine in the U.S. to be fully approved.
U.S. health officials are expected to recommend that people receive an additional COVID-19 vaccine dose eight months after their second dose.
COVID-19 vaccines largely prevent severe illness, but the delta variant raises the question of whether and when booster shots will be needed.
There's still much that’s unknown about the subtle impacts a typical COVID-19 infection may have on the body and the nervous system.
The COVID-19 vaccines that are used in the U.S. are highly effective. But sometimes, the coronavirus can still infect people who are vaccinated, causing so-called breakthrough infections.
The FDA is planning to update the emergency use authorizations for Pfizer and Moderna's COVID-19 vaccines to include a third dose for immunocompromised people.
Hints in the data suggest the Johnson & Johnson vaccine has the most breakthroughs, while Moderna has the least.