Why the CDC Changed Its Advice on Masks

Advice from federal health officials that fully vaccinated people could drop their masks in most settings came as a surprise to Americans, from state officials to scientific experts. Even the White House got less than a day’s notice from the Centers for Disease Control and Prevention, the press secretary, Jen Psaki, said at a news…

Pfizer and Moderna vaccines are powerfully effective against the virus, a C.D.C. analysis confirmed.

The Pfizer-BioNTech and Moderna coronavirus vaccines are 94 percent effective at preventing symptomatic Covid-19 illness, according to a new study of more than 1,800 health care workers in the United States. The research, which the Centers for Disease Control and Prevention released on Friday, provides yet more evidence that the vaccines are working well even…

Access to overdose-reversing drugs declined during pandemic, researchers find

Boston – While overall emergency department visits have decreased during the pandemic, nonfatal opioid overdose visits have more than doubled. However, few patients who overdosed on opioids had received a prescription for naloxone, a medication designed to block the effects of opioids on the brain and rapidly reverse opioid overdose. In a new study, clinician-researchers…