Heart Problems After Vaccination in U.S. Are Uncommon and Short-Lived, Researchers Say

For every one million Americans immunized with a coronavirus vaccine, about 60 develop temporary heart problems, according to a study published on Wednesday in the journal JAMA Network. The complications were all short-lived, the researchers found. And these heart problems are far more common among patients who develop Covid-19, outside experts noted. Analyzing the medical…

Nursing Homes Confront New Covid Outbreaks Amid Calls for Staff Vaccination Mandates

In saying last Friday that it was monitoring outbreaks at nursing homes related to the Delta variant, the C.D.C. said some measures under review would include “testing, quarantine, visitation, use of PPE and source control.” Underscoring the concern of regulators about unvaccinated workers, Colorado just implemented a new rule that unvaccinated staff members at nursing…

The Making of an Olympian

World-class junior competitors, the scientists found, who stockpiled international medals while still in their teens tended to have settled on a single sport before about age 12, a year or two earlier than most of their competitors, including other young athletes who excelled at the regional and national levels. What separated great young athletes in…