Eric Walker added Smallpox to Variola major, and added Variola major to Orthopoxvirus

Eric Walker added Variola major and Monkeypox virus to Orthopoxvirus, and added Orthopoxvirus to Poxviridae

Eric Walker added 1633 Massachusetts smallpox epidemic and Use of smallpox as a biological weapon and a number of links to Smallpox, and added Smallpox to Variola major and Infectious disease (ID)