WHO is an organization of 194 Member States. The Member States elect the Director-General, who leads the organization in achieving its global health goals.

WHO´s team of 8000+ professionals includes the world’s leading public health experts, including doctors, epidemiologists, scientists and managers. They coordinate the world’s response to health emergencies, promote well-being, prevent disease and expand access to health care. By connecting nations, people and partners to scientific evidence they can rely on, they strive to give everyone an equal chance at a safe and healthy life.

Headquarters: Geneva, Switzerland
Founded: April 7, 1948
Parent organization: United Nations
Abbreviation: WHO
Budget: $7.96 billion (2020–21)

The Centers for Disease Control and Prevention (CDC) is the national public health agency of the United States. It is a United States federal agency under the Department of Health and Human Services, and is headquartered in Atlanta, Georgia.
The agency’s main goal is the protection of public health and safety through the control and prevention of disease, injury, and disability in the US and worldwide. The CDC focuses national attention on developing and applying disease control and prevention. It especially focuses its attention on infectious disease, food borne pathogens, environmental health, occupational safety and health, health promotion, injury prevention, and educational activities designed to improve the health of United States citizens. The CDC also conducts research and provides information on non-infectious diseases, such as obesity and diabetes, and is a founding member of the International Association of National Public Health Institutes.