New Flyer: Poxviruses
For most of human history, smallpox was a serious threat to human life. With discovery of vaccines based on the similar, less dangerous vaccinia virus, this changed, and a global public health effort has eradicated smallpox from the face of the Earth. Other poxviruses, such as monkeypox and cowpox, are still causing rare, localized infections. These are often the result of transfer of the virus from animals to humans.