What is the most common food source for Hepatitis A?

The most common food source for Hepatitis A is infected food with fecal matter. Hepatitis A is primarily transmitted through the fecal-oral route, which means that individuals can become infected by consuming food that has been contaminated by the feces of an infected person. This contamination often occurs in settings where food handlers do not practice proper hygiene, such as washing hands after using the restroom.

While undercooked seafood can be a potential source of various foodborne illnesses, including some viral infections, it is not the most common transmission route for Hepatitis A specifically. Contaminated water is indeed a significant risk factor as well, particularly in regions where sanitation practices are poor, but the primary concern in terms of Hepatitis A outbreaks is often linked directly to food that has been mishandled or contaminated.

Expired dairy products may pose other health risks, such as bacterial growth or spoilage, but they do not directly relate to the transmission of Hepatitis A. Therefore, the option regarding infected food with fecal matter accurately highlights the primary mechanism through which Hepatitis A is spread.