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A World Health Organization commission of scientists certified the global eradication of smallpox, making it the only human infectious disease to date to have been completely eradicated.
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World Health Organization
Specialized agency of the United Nations
The World Health Organization (WHO) is a specialized agency of the United Nations which coordinates responses to international public health issues and emergencies. It is headquartered in Geneva, Switzerland, and has 6 regional offices and 150 field offices worldwide. Only…Source: Wikipedia (CC BY-SA)
Smallpox
Eradicated viral disease
Smallpox was an infectious disease caused by Variola virus, which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, making smallpox…Source: Wikipedia (CC BY-SA)
Infection
Invasion of an organism's body by pathogenic agents
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an…Source: Wikipedia (CC BY-SA)
Eradication of infectious diseases
Elimination of a disease from all hosts
The eradication of infectious diseases is the reduction of the prevalence of an infectious disease in the global host population to zero.Source: Wikipedia (CC BY-SA)