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Vibriosis causes an estimated 80,000 illnesses and 100 deaths in the United States every year. People with vibriosis become infected by consuming raw or undercooked seafood or exposing a wound to seawater. Most infections occur from May through October when water temperatures are warmer.


Information on this website focuses on Vibrio species causing vibriosis. To learn about the illness caused by certain strains of V.cholerae, visit CDC’s cholera website.

Vibrio and Raw Oysters

Grilled oysters

Eating raw oysters can increase the chance you will get sick with vibriosis. That’s because Vibrio bacteria thrive in coastal waters where oysters are harvested.

Cooking Shellfish

shellfish cooking image

Find out the proper way to select and cook shellfish in the shell and shucked oysters.

People at Risk for Infection

Older gentlemen on beach with binoculars

Anyone can get sick from vibriosis, but some people may be more likely to get an infection or severe complications.