The Public Health Agency of Canada (PHAC) is a federal agency responsible for promoting and protecting the health of Canadians. Established in 2004, it focuses on preventing disease, responding to public health emergencies, and improving health outcomes through research and collaboration with various stakeholders. PHAC works closely with provincial and territorial health authorities, as well as international organizations like the World Health Organization. The agency provides guidance on health policies, conducts health surveillance, and offers resources to help Canadians make informed health choices.