variola minor Directory References Discover 7 of the World’s Deadliest Plants 10 Greatest Baseball Players of All Time The Disappearance of Amelia Earhart 7 of History's Most Notorious Serial Killers Falling Stars: 10 of the Most Famous Endangered Species 10 Inventions That Changed Your World Who Invented the Internet? Contents Ask the Chatbot a Question variola minor virus Ask the Chatbot a Question Learn about this topic in these articles:smallpox In smallpox…closely related virus known as variola minor.) There are no natural animal carriers nor natural propagation of variola outside the human body.Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.