Which agency is primarily concerned with infectious and contagious diseases transmitted through shellfish, milk, vending machines, and restaurants?

The correct answer is the Public Health Service (PHS), which plays a crucial role in the monitoring and control of infectious diseases, particularly those transmitted through food sources such as shellfish, milk, and food served in restaurants and vending machines. The PHS operates under the Department of Health and Human Services and focuses on public health concerns, which includes disease prevention and health promotion.

In this context, the PHS collaborates with various agencies to establish guidelines and regulations aimed at preventing outbreaks of foodborne illnesses. This includes working on food safety measures and providing information regarding the handling and consumption of potentially hazardous food items. The attention to infectious and contagious diseases that can be transmitted via food sources emphasizes the importance of maintaining public health standards.

While the other agencies mentioned also have important roles in public health and food safety, their primary missions differ. The National Marine Fisheries Service (NMFS) mainly focuses on the management and conservation of marine resources, rather than directly addressing the public health concerns related to foodborne diseases. The Department of Health and Human Services (DHHS) encompasses broader health initiatives, while the Centers for Disease Control (CDC) is widely recognized for its work on infectious disease monitoring and prevention, but the PHS specifically addresses the broader public health implications