Which waterborne disease can be prevented through vaccinations?

The correct answer is Hepatitis A. This is a viral infection caused by the Hepatitis A virus, which is primarily transmitted through contaminated food and water. Vaccination is a highly effective method to prevent Hepatitis A, and it is recommended for individuals traveling to areas where the virus is more common, as well as for certain high-risk populations. Vaccination helps the immune system recognize and fight the virus, significantly reducing the chance of infection.

Cholera, while also a waterborne disease, has a vaccine but its use is limited mainly to travelers and those at highest risk, and vaccination does not provide long-lasting immunity. Giardia lamblia, a protozoan parasite, does not have an available vaccine and is typically prevented through safe water practices and proper sanitation. Listeriosis is a foodborne disease caused mainly by consuming contaminated food, and there is no vaccine available for prevention. Thus, Hepatitis A stands out as the primary waterborne disease that can be effectively prevented through vaccination.