Which organization implements the National Immunization Program (NIP) through its Expanded Program on Immunization (EPI)?

The correct answer highlights that the Department of Health (DOH) is the organization responsible for implementing the National Immunization Program (NIP) through its Expanded Program on Immunization (EPI). The DOH plays a critical role in coordinating and executing health programs at the national level, particularly those that focus on preventive health measures like immunization.

The EPI is designed to ensure that essential vaccines are made available to children, ultimately aiming to reduce morbidity and mortality from vaccine-preventable diseases. The DOH provides guidelines, resources, and support to various local health units to ensure the successful delivery of these immunization services. This structured approach allows for effective monitoring and evaluation of immunization coverage and adapting strategies to enhance public health initiatives.

While other organizations like WHO, UNICEF, and UNESCO are involved in global health initiatives and support immunization efforts, they do not directly implement the programs at the national level in the same way that DOH does. WHO and UNICEF may assist by providing funding, guidance, or educational resources, but the responsibility for execution lies with national health departments such as the DOH.