Is COVID-19 infecting wild animals? We're testing species from bats to seals to find out

COVID-19 has been found in pets, zoo animals and in a wild mink in Utah. Monitoring wildlife for COVID-19 is important for animals and humans, both of whom face risks from a jumping virus.

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How anti-vax memes replicate through satire and irony

Memes that promote harmful conspiracies and memes that mock them are sometimes hard to distinguish.

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What you need to know about the new COVID-19 variants

A biologist who studies the evolution of diseases explains what's different about the two new virus strains that have been found recently, and what that means for vaccine effectiveness.

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The simple reason West Virginia leads the nation in vaccinating nursing home residents

West Virginia turned to its local pharmacies for help. Its program's success holds some important lessons for other states and the rest of the vaccine rollout.

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Americans have unrealistic expectations for a COVID-19 vaccine

Two in five Americans say they don't want a COVID-19 vaccine, which is a problem. Finding out what Americans do want from a vaccine might help.

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Vaccine delays reveal unexpected weak link in supply chains: A shortage of workers

The shipment of goods to suppliers has become technologically sophisticated. Delays in getting out the COVID-19 vaccine to people show that the breakdowns come down to something more basic.

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COVID-19 crisis in Los Angeles: Why activating 'crisis standards of care' is crucial for overwhelmed hospitals

States and hospitals are starting to declare 'crisis standards of care' as the pandemic floods their ERs. The orders have consequences – both good and bad, as a medical ethicist explains.

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How many people need to get a COVID-19 vaccine in order to stop the coronavirus?

Researchers say around 70% of the US needs to get the coronavirus vaccine to stop the pandemic. But questions around the vaccines and regional differences add some uncertainty to that estimate.

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The cold supply chain can't reach everywhere – that's a big problem for equitable COVID-19 vaccination

So far, the only COVID-19 vaccines authorized for use need to be kept frozen. But there are many places in the world that can't support a cold supply chain.

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