Which virus is commonly linked to contaminated shellfish or raw shellfish?

The virus most commonly linked to contaminated shellfish or raw shellfish is the Norwalk virus, which is part of the Caliciviridae family. This virus is notorious for causing gastroenteritis outbreaks, particularly in areas where shellfish are harvested or consumed raw. Norwalk virus is highly contagious and can be transmitted through the consumption of contaminated water or food, especially shellfish that filter water and can accumulate the virus from their environment.

Infections can occur when individuals consume raw or undercooked shellfish, leading to symptoms such as vomiting, diarrhea, and abdominal cramps. The association with shellfish is especially crucial because these foods often come from waters that may be polluted with fecal matter, which can harbor the virus. Robust hygiene practices and proper cooking methods are vital in preventing Norwalk virus infection linked to shellfish consumption.