'Cataclysmic:' Experts decry U.S. departure from WHO.

Trump's decision to leave would be a financial blow to the agency and "isolate" the U.S. from health intelligence.

'America first' could affect health worldwide.

Scientists worry Donald Trump will leave WHO again and slash disease control programs.

Second malaria vaccine gets WHO green light.

New shots could make malaria protection more plentiful, saving tens of thousands of lives.

Studies probe COVID-19 shots' link to rare symptoms.

Details emerge for uncommon cases of neurologic complications, blood pressure swings, and other side effects.

Human genomic 'bycatch' threatens privacy.

Environmental and microbe studies net human DNA that can reveal health, identity.

Do COVID-19 vaccine mandates still make sense?

Ineffective or outdated requirements could undermine trust, some vaccine researchers say.

Pandemic vaccine equity plan may soon start winding down.

COVAX distributed 1.84 billion vaccine doses, but many came too late. Can the world do better next time?

New look at jaw fossil rewrites centuries-old bird history.

Specimen flips evolutionary order of two key groups.

Invasive mosquito adds to Africa's malaria toll.

may dramatically increase the number of people at risk.

New Omicron strains may portend big COVID-19 waves.

Emerging subvariants are more immune evasive than ever.

Omicron shots are coming-with lots of questions.

Decisions on boosters targeting subvariants will be based on limited data.

New subvariants are masters of immune evasion.

Vaccines and prior infection still prevent severe disease from new SARS-CoV-2 strains.

Signals from the sewer.

Measuring virus levels in wastewater can help track the pandemic. But how useful is that?

Vaccines may cause rare, Long Covid-like symptoms.

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