Which of the following diseases might be transmitted by inadequately treated sewage?

Inadequately treated sewage can be a significant public health risk, as it may contain pathogens that lead to various waterborne diseases. Hepatitis, particularly Hepatitis A, is primarily transmitted through the fecal-oral route, which means that it can spread when a person ingests food or water contaminated with the feces of an infected person. In regions where sewage treatment is poor and sanitation practices are lacking, the risk of transmitting Hepatitis A increases substantially.

The other diseases listed, while serious, have different modes of transmission. The flu is primarily airborne and spreads through respiratory droplets. Measles is also spread through respiratory droplets when an infected person coughs or sneezes, and it requires a high level of immunity in the community to be effectively controlled. Tuberculosis (TB) spreads through airborne droplets as well and is not associated with sewage.

Given this context, Hepatitis is correctly identified as a disease that might be transmitted through inadequately treated sewage, as its transmission relates closely to fecal contamination. Understanding the appropriate management of sewage is crucial to prevent such public health issues.