Which agency is responsible for national health issues and immunization requirements?

The Centers for Disease Control and Prevention (CDC) is the agency responsible for national health issues and immunization requirements. The CDC plays a crucial role in monitoring health trends, controlling infectious diseases, and providing guidelines for vaccinations to protect public health.

One of the CDC's key functions is to implement and promote immunization programs, ensuring that vaccines are readily available and that the population is educated about the importance of vaccination in preventing disease outbreaks. Additionally, the CDC collaborates with state and local health departments to develop strategies to enhance vaccination rates and manage health crises arising from vaccine-preventable diseases.

Each of the other agencies has specific responsibilities but does not focus on the same scope of public health and immunization. For example, the Food and Drug Administration (FDA) is mainly concerned with the regulation of food and drug safety, while the Drug Enforcement Administration (DEA) primarily manages the control of drug use and enforcement of drug-related laws. The Environmental Protection Agency (EPA) focuses on protecting human health and the environment through regulations and oversight related to pollutants and environmental hazards.

In summary, the CDC's authority and actions directly align with managing national health issues and immunization requirements, making it the correct choice in this context.