Brain-Eating Amoeba: Scientists Warn of Global Spread as Climate Warms Water Systems

# Brain-Eating Amoeba: Scientists Warn of Global Spread as Climate Warms Water Systems

> **Quick answer:** Scientists published new research in May 2026 warning that Naegleria fowleri — the brain-eating amoeba — is expanding northward into states like Minnesota, Indiana, and Missouri as climate change raises freshwater temperatures. The infection causes primary amebic meningoencephalitis (PAM), which is fatal in over 97% of cases. The CDC has documented 167 US cases since 1962, typically occurring in summer. Holding your nose when jumping into warm freshwater and avoiding shallow, stagnant water are the most effective protective measures.

Scientists are sounding a new alarm about brain-eating amoeba in 2026, and the threat is no longer confined to the American South. As global water temperatures rise, Naegleria fowleri is expanding into regions that once considered themselves safe — and a new research review warns the danger goes far beyond the amoeba itself.

## What Scientists Just Found: The May 2026 Warning

In a peer-reviewed analysis published in May 2026, researchers led by Longfei Shu at Sun Yat-sen University identified free-living amoebae as an escalating global public health crisis. Their findings, covered by ScienceDaily, went well beyond the familiar "brain-eating amoeba" headlines.

The core concern is threefold: