Patients are usually most infectious two days before symptoms begin and for five days after, a new analysis finds.
Tag: Centers for Disease Control and Prevention
Confused About Masks? Here’s What Scientists Know
The accumulating research may be imperfect, and it’s still evolving, but the takeaway is simple. Right now, masks are necessary to slow the pandemic.
Wearing Masks to Prevent Coronavirus: Here’s What Scientists Know
The accumulating research may be imperfect, and it’s still evolving, but the takeaway is simple. Right now, masks are necessary to slow the pandemic.
Measles Deaths Soared Worldwide Last Year, as Vaccine Rates Stalled
The new data, from the W.H.O. and C.D.C., alarmed public health experts, who fear the effect of the coronavirus pandemic this year could bring more bad numbers.
Tests Show Genetic Signature of Coronavirus That Likely Infected Trump
The White House did not take basic steps to investigate its outbreak. We worked with geneticists to sequence the virus that infected two journalists exposed during the outbreak, providing clues to how it may have spread.
Schoolchildren Seem Unlikely to Fuel Coronavirus Surges, Scientists Say
Researchers once feared that school reopenings might spread the virus through communities. But so far there is little evidence that it’s happening.
South Korea Tries to Quell Anxiety Over Flu Shots After 13 Unexplained Deaths
Health officials say there is no link between the deaths and the flu vaccines. But the deaths, after two recent vaccine recalls, have raised safety fears among the public at a critical time.
South Korea Tries to Quell Anxiety Over Flu Shots After 9 Unexplained Deaths
Health officials say there is no link between the deaths and the flu vaccines. But the deaths, after two recent vaccine recalls, have raised safety fears among the public at a critical time.
The Pandemic’s Real Toll? 300,000 Deaths, and It’s Not Just From the Coronavirus
A C.D.C. analysis finds that overall death rates have risen, particularly among young adults and people of color.
She Hunts Viral Rumors About Real Viruses
For Heidi Larson, the founder of the Vaccine Confidence Project, dispelling vaccine hesitancy means building trust — and avoiding the term “anti-vaxxer.”