Global pandemic treaty stalls, again, over equity concerns.

But negotiators approve new "pandemic emergency" alarm.

A bird flu vaccine for cows? It's complicated.

Market uncertainties, safety rules, and export worries stand in way of H5N1 shots for cattle.

Virus gone wild.

An ambitious U.S. project aims to sample more than 50 animal species to clarify how the COVID-19 virus moves between people and wildlife.

Bird flu appears entrenched in U.S. dairy herds.

New measures to control H5N1 in cows are "a drop in the bucket," scientists say.

Africa steps up battle against mpox outbreaks.

Research consortium announced as new variant spreads in Congolese mining region.

Worries about bird flu in U.S. cattle intensify.

Farm worker becomes infected as H5N1 appears to spread between dairy cows in five states.

U.S. government in hot seat for cow flu outbreak response.

Veterinarians and researchers say it has taken too long to share data on viral changes, spread, and milk safety.

Plans to expand African vaccine production face steep hurdles.

Moderna's pause on Kenya project highlights difficulties in creating a competitive vaccine sector on the continent.

Africa may lead rollout of long-lasting HIV drug.

U.S. agency plans to make inexpensive prevention shots widely available for people at risk.

Rifts over equity imperil WHO's pandemic treaty.

As deadline nears, negotiations continue over sharing pathogen sequences and vaccine doses.

'I'm not Tony': Anthony Fauci's heir vows new direction at NIAID.

Jeanne Marrazzo, an HIV prevention researcher, sees need for more "holistic" approach to community health problems.

Skin side effects stymie advance of HIV vaccine.

Strategy of using multiple mRNA shots to hone powerful antibodies hits a pothole.

Meat from gene-edited pigs could hit the market.

United States and other countries may soon approve virus-proof pigs.

Covid's cold cousins.

Four largely ignored coronaviruses circulate in humans without causing great harm and may portend the future for SARS-CoV-2.

Rare studies expose bats to SARS-CoV-2.

Infecting captive species could help gauge pandemic risk of coronaviruses that have yet to infect humans.

Deadliest mpox outbreak ever sparks a new worry.

Congo cases suggest viral strain there is spreading sexually, like less lethal one that triggered last year's global outbreak.

'Gene drive' may help fight viruses with viruses.

CRISPR-engineered herpesviruses can speed spread of genes to viral relatives in mice.

A chikungunya vaccine is likely to get approved. Who will get it?

Travelers are first, but the real need is in endemic areas.

Billions boost next-generation weapons against SARS-CoV-2.

U.S. government project bets big on intranasal vaccines and monoclonal antibodies, but omits more ambitious approaches.

Award honors pair for mRNA work key to COVID-19 vaccines.

Katalin Karikó and Drew Weissman overcame a major roadblock to a novel immunization approach.