Which of the following is a waterborne viral infection associated with sewage?

Polio is a waterborne viral infection that is closely linked to sewage contamination. It is caused by the poliovirus, which can be present in the feces of infected individuals. When sewage enters water supplies that are not adequately treated, the virus can spread, particularly in areas with poor sanitation and inadequate access to clean water.

The transmission of polio typically occurs when a person ingests water or food contaminated with the virus. This emphasizes the importance of safe water management practices and sanitation systems to prevent outbreaks. Understanding the routes of transmission for polio highlights the relationship between water quality, public health, and the importance of effective sewage treatment.

In contrast, typhoid fever is primarily a bacterial infection caused by Salmonella typhi, while rubeola (measles) and hepatitis B are both viral infections that are spread in different ways, primarily through respiratory droplets and blood or bodily fluids, respectively. This distinction is crucial in identifying waterborne diseases, which makes polio the correct answer in this context.