The World Health Organization is sounding the alarm about a hypervirulent superbug.

the neighborhoods of harmless and beneficial bacteria that live on or in our bodies.

As a germ,K.

A scanning electron micrograph image of Klebsiella pneumoniae.

A scanning electron micrograph image of Klebsiella pneumoniae.© BSIP/UIG Via Getty

pneumoniaeis typically an opportunistic infection, sickening people who are already in poor health and/or have weakened immune systems.

Like many dangerous bacteria,K.

But in recent years, doctors have started to increasingly come acrossK.

E Coli

These strains have been coined hypervirulentK.

pneumoniaesequence key in 23, or hvKp ST23.

This week, the WHOissueda grave update on the situation.

MRSA

News from the future, delivered to your present.

A petri dish containing Candida auris

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Illustration: Alissa Eckert/CDC

Illustration: Stephanie Rossow

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