Which organization is most notable for helping eradicate smallpox?

• A. World Health Organization
• B. Centers for Disease Control and Prevention
• C. United Nations Development Programme
• D. International Monetary Fund

Answer: (A)

Global health leadership and coordinated vaccination campaigns are key to eradicating a disease. The World Health Organization led the Global Smallpox Eradication Programme, directing vaccination drives, surveillance, and containment strategies across many countries. Their approach—mapping cases, tracking transmission, and using ring vaccination to immunize contacts around each case—breaks the chain of transmission and enables global interruption of the disease. The effort culminated in the formal certification of eradication in 1980, a landmark achievement in public health.

Other organizations contribute in important ways, but not in the same global eradication leadership role. The Centers for Disease Control and Prevention is a U.S. public health agency focused on disease control and prevention, domestically and in select international efforts. The United Nations Development Programme concentrates on development projects, and the International Monetary Fund focuses on international finance. The World Health Organization is the one most notably associated with the global eradication of smallpox.