Biosafety level 4 pathogens

Smallpox was an infectious disease caused by Variola virus (often called Smallpox 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 the only human disease to have been eradicated.

Nipah virus is a bat-borne, zoonotic virus that causes Nipah virus infection in humans and other animals, a disease with a very high case fatality rate (40–75%). Numerous disease outbreaks caused by the Nipah virus have occurred in India, Malaysia, and Singapore. Nipah virus belongs to the genus Henipavirus along with the Hendra virus, which has also caused disease outbreaks.

virus in the species Marburg marburgvirus

species of virus

species within the genus Ebolavirus

species of virus

species of virus