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Don’t eat raw or undercooked shellfish. While the people most at risk have underlying liver disease or are immunocompromised, some people who become deathly ill are perfectly healthy, like my colleague I described previously.

There are a couple of oddball exposures to Vibrio. One of the Delaware cases worked in a seafood restaurant, but had no exposure to shellfish or the Bay. Perhaps he had a small cut that was unrecognized? There was another weird case of Vibrio from a man cutting himself while cleaning fish bought at a supermarket’s live fish tank.

Don’t go into the ocean or freshwater with open wounds. Clean any cuts you might get that are exposed to “fresh” or seawater carefully and monitor for any early signs of infection. It’s critically important you tell your physician about the exposure, as the diagnostic cultures and antibiotics are different.

Keep this poster child of climate change in mind. If the water is unusually warm be prepared for Vibrio.