Latest from Carolyn Y. Johnson

Pfizer-BioNTech vaccine offers strong protection against key variants of concern, real-world data from Qatar shows

The findings back up laboratory tests that had suggested the vaccine would protect against variants first identified in South Africa and Britain.
  • May 5, 2021

FDA appears poised to authorize Pfizer-BioNTech vaccine for adolescents by next week

Families and pediatricians have been eager for a vaccine to become available for children, particularly in advance of the next school year.
  • May 3, 2021

Federal agencies lift pause on use of Johnson & Johnson vaccine, saying benefits outweigh risks

The U.S. decision to lift the pause on the vaccine's use with a warning added to the label is similar to one taken by Europe’s drug regulator.
  • Apr 23, 2021

Covid-19 live updates: Reinfection is possible but rare, data from 63 million medical records shows

The possibility of reinfection once raised the specter of a never-ending pandemic. But new study shows the risk is exceedingly rare.
  • Apr 22, 2021

The race to untangle the secrets of rare, severe blood clots after Johnson & Johnson vaccination

Making sense of rare, possibly related adverse events after vaccination can be notoriously tricky, but in this case, U.S. health officials have a blueprint.
  • Apr 19, 2021

Your questions about coronavirus vaccines, answered

With three coronavirus vaccines receiving federal clearance, we answer your questions — from when you should get vaccinated to how they work and how they were made so quickly.
  • Apr 16, 2021

CDC vaccine advisers seek more data on rare blood clots before deciding whether to resume Johnson & Johnson shots

Federal health officials had recommended Tuesday that states pause use of the vaccine while agencies review six U.S. cases of a rare and severe type of brain blood clot among the more than 7 million people who received the shot.
  • Apr 14, 2021

FDA, CDC call for pause in use of Johnson & Johnson vaccine after ‘extremely rare’ cases of blood clots

The agencies said Tuesday that they are reviewing data involving six reported U.S. cases of a rare and severe type of blood clot in individuals after receiving the shot.
  • Apr 13, 2021

A vaccine study in college students will help determine when it’s safe to take masks off

A massive study unfolding at 20 college campuses aims to determine how well the Moderna coronavirus vaccine prevents vaccinated people from becoming unwitting carriers of the virus.
  • Apr 12, 2021

Cases and hospitalizations are on the rise. ‘We cannot afford to let our guard down,’ CDC director says.

The data is the beginning of what many families, eager for normalcy to return, have been waiting to see and if regulators extend the authorization to younger age groups, vaccinations could begin before the next school year.
  • Mar 31, 2021