Vaccine and booster side effects can include fever, aches and fatigue. And this may be the first vaccine in history where people complain if they don't experience side effects, says one doctor.
In small studies in South Africa and in Germany, the results indicate a marked decrease in the ability of vaccines to neutralize this variant. But there are other findings that are encouraging.
Omicron has many more mutations than previous variants of concern, a fact that raises questions about how effective existing vaccines will be against the new form of the coronavirus.
Pfizer researchers looking for a drug to treat SARS found clues that gave the company a head start in its quest for a pill to treat COVID-19, including the omicron variant.
Pfizer's CEO says the vaccine maker has asked federal regulators to authorize boosters for 16- and 17-year-olds. Currently, only people 18 and over are eligible for a booster in the U.S.
The FDA is considering new pills that could treat people in early stages of COVID. Here's what to know about how they work, how effective they are and the impact they could make on the pandemic.
The U.S. has pledged to deliver 1.1 billion doses of COVID vaccines to countries in need. Billions more are needed. NPR interviewed the State Department's global vaccine coordinator to learn more.
The companies studied a 10 microgram vaccine dose in children 5 to 11, a third of the dose used for adults, to minimize side effects and because it still prompts a strong immune response.
"With new cases in children in the U.S. continuing to be at a high level, this submission is an important step in our ongoing effort against #COVID19," the pharmaceutical giant said.
A source familiar with the discussions says administration health experts could make the recommendation for fully vaccinated adults as soon as this week.