Brainerd Diarrhea Cause Mystery

Brainerd diarrhea is a sudden-onset, watery, explosive illness that can last for months and does not respond to antibiotics. Doctors first described it in Brainerd, Minnesota, in 1983, and since then they have recorded ten outbreaks, including nine in the United States. Investigators have linked some outbreaks to raw milk and untreated water, but they still have not identified the exact cause. That has left Brainerd diarrhea as a real medical mystery that can drag on for months or even years before it finally resolves.

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