World Nov 30, 2020

Should isolation periods be shorter for people with COVID-19?

People with COVID-19 are most infectious about two days before symptoms begin and for five days afterward, according to a new analysis of previous research.

World / Science & Health Nov 21, 2020

The coronavirus is airborne indoors, but we’re still scrubbing surfaces

Scientists who initially warned about contaminated surfaces now say here is little to no evidence that deep cleaning mitigates the threat indoors.

World / Science & Health Oct 28, 2020

Some COVID-19 survivors have antibodies that attack the body, not the virus

Some survivors of COVID-19 carry worrying signs that their immune system has turned on the body, reminiscent of potentially debilitating diseases like lupus and rheumatoid arthritis, a new study has found. At some point, the body’s defense system in these patients shifted into attacking itself, ...

World / Science & Health Oct 14, 2020

Coronavirus reinfections are real but very, very rare

Experts discuss what is known about reinfections with the coronavirus, and what the phenomenon means for vaccinations and the course of the pandemic.

World / Science & Health Oct 6, 2020

The coronavirus may be adrift in indoor air, CDC acknowledges

Two weeks after the U.S. Centers for Disease Control and Prevention took down a statement about airborne transmission of the coronavirus, the agency Monday replaced it with language citing new evidence that the virus can spread beyond 6 feet (1.8 meters) indoors. "These transmissions occurred ...

World / Science & Health Sep 26, 2020

Study shows why children fight off COVID-19 better than adults

Why the coronavirus affects children much less severely than adults has become an enduring mystery of the pandemic. The vast majority of children do not get sick; when they do, they usually recover. The first study to compare the immune response in children with that ...

World Sep 22, 2020

Advice on virus transmission vanishes from CDC website

The rapid reversal prompted consternation among scientists and again called into question the credibility of the world’s premiere health agency.

Asia Pacific / Science & Health Aug 25, 2020

First documented coronavirus reinfection reported in Hong Kong

A 33-year-old man was infected a second time with the coronavirus more than four months after his first bout, the first documented case of so-called reinfection, researchers in Hong Kong reported Monday. The finding was not unexpected, especially given the millions of people who have ...

World Aug 15, 2020

Older children and the coronavirus: A new wrinkle in the debate

A study by researchers in South Korea last month suggested that children ages 10-19 spread the coronavirus more frequently than adults — a widely reported finding that influenced the debate about the risks of reopening schools. But additional data from the research team now calls ...