If you are high-risk, the answer is straightforward. If you are low-risk, there is less consensus.
A young version of the coronavirus makes up one-quarter of Covid cases across the United States and over 70 percent of new cases in the Northeast.
La “variante pesadilla” no es tan mala como suena.
The “nightmare variant” is not as bad as it sounds.
There are no cases in the United States, but the C.D.C. wants doctors to be on the alert for patients with telltale symptoms.
Older people who received smallpox vaccinations may yet have some immunity, researchers say. Healthy children and adults generally do not become severely ill.
The puzzling coronavirus cases highlight ongoing surveillance challenges and blind spots.
But prior infection does not guarantee protection from the virus, officials said, and Americans should still get vaccinated and boosted.
The Alzheimer’s Association has pushed relentlessly to get broad access to Aduhelm, despite safety risks and uncertain evidence that it helps patients.
Experts say that the most vulnerable would benefit from a second booster soonest.