Noun
Cowpox; vaccina. See Cowpox.
Source: Webster's dictionaryAt some point, the virus in use was no longer cowpox, but vaccinia. Source: Internet
Scientists have not determined exactly when the change or mutation occurred, but the effects of vaccinia and cowpox virus as vaccine are nearly the same. citation Cowpox lesions on patient’s forearm on day 7 after onset of illness. Source: Internet
Other orthopox viruses remain prevalent in certain communities and continue to infect humans, such as the cowpox virus (CPXV) in Europe, vaccinia in Brazil, and monkeypox virus in Central and West Africa. Source: Internet
The hemagglutinin gene of the isolate clustered with a Russian cowpox virus strain, and more distantly, with other cowpox and vaccinia virus strains. Source: Internet
The virus, part of the orthopoxvirus family, is closely related to the vaccinia virus. Source: Internet
Though the vaccine now uses vaccinia virus, the poxviruses are similar enough that the body becomes immune to both cow- and smallpox. Source: Internet