What is Variolae Vaccinae?

Variolae Vaccinae is the scientific name for the virus that causes cowpox, a disease primarily affecting cattle but also transmissible to humans. It is historically significant for its role in the development of the smallpox vaccine, as exposure to cowpox virus was found to provide immunity against the more deadly smallpox virus. The discovery by Edward Jenner in the late 18th century laid the foundation for vaccination practices, ultimately leading to the eradication of smallpox. Cowpox is generally a mild infection in humans, characterized by localized lesions.