The FDA has called for updating COVID vaccines to address the Omicron subvariants BA.4 and BA.5. But will the shots keep up with the virus?

Does the new strain sweeping the globe mean COVID will become ever more contagious?

Burning piles of used gloves, test kits and syringes release toxic pollutants. But there are ways to improve medical recycling

A new study in Mexico shows that non-mRNA vaccines like the Russian version can be as effective as mRNA vaccines like Pfizer if the patient has previously been infected with SARS-CoV-2.

Vaccine makers worry yet another variant will start dominating in the months it takes to roll out shots against this one

A group of academics claim the president of EcoHealth Alliance has misled the public amid Covid origins investigations.

Should work done on coronaviruses in Wuhan, China, be considered “gain-of-function” research? Opinions differ.

The U.S.’s top infectious disease specialist describes a new Biden administration program to develop and test antivirals—and what he’s most worried about as the nation reopens

With the risks of drug development prohibitive, repurposed or repositioned medicines appear the best hope against long-COVID, a condition that still raises many unanswered questions.

More than a year into the SARS-CoV-2 pandemic, some scientists say the possibility of a lab leak never got a fair look.

A treatment from World War I is making a comeback in the struggle to beat deadly multidrug-resistant infections

The surprise revelation means 12 million Vietnamese may need to retreat

An overemphasis on blood testing and case management for even low exposures is draining resources and ignoring the real need: Removing lead paint.

More and more communities are emerging as hotspots for drinking water tainted with perflourochemicals used in making Teflon, Gor-Tex, and hundreds of other commercial products. Are they harmful? This article investigates.

American warplanes sprayed millions of gallons of Agent Orange during the Vietnam War. Some researchers and the Vietnamese government insist that its toxic effects last generations. Read on to learn more from my reporting trip to Vietnam last year.