WebSep 26, 2024 · Smallpox is a disease caused by a poxvirus that is transmitted from person to person causes high fever, and characteristic rash, and may kill about one-third of those … WebJul 12, 2024 · Thousands of years ago, variola virus (smallpox virus) emerged and began causing illness and deaths in human populations, with smallpox outbreaks occurring from …
Effect of prior immunisation with smallpox vaccine for protection ...
WebJun 23, 2008 · Empires fall. It is believed that smallpox first incubated 10,000 years ago in northern Africa, spreading slowly to the rest of the ancient world. Repeat epidemics of the highly contagious virus ... WebMar 3, 2003 · Vaccination 40 years ago, even if not currently protective against smallpox disease, may offer some protection against a fatal outcome. A study of smallpox cases imported into nonendemic countries ... tools for working on laptops
Smallpox CDC
WebAug 8, 2003 · Caused by a moderately contagious virus known as Variola major , the initial signs of smallpox came twelve days after exposure, usually by infection of the respiratory tract. Mild at first, the early symptoms were much like those of the flu. They included headache, backache, fever, vomiting and general malaise. WebJun 7, 2016 · Rarely, smallpox has spread through the air in enclosed settings, such as a building (airborne route). Smallpox can be spread by humans only. Scientists have no evidence that smallpox can be spread by insects or animals. Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious … WebSmallpox was a dangerous disease caused by the variola major virus. The most common type of smallpox, ordinary, historically has devastated populations with a 30% death rate. The smallpox virus is transmittable through bodily fluids and materials contaminated with infected materials. tools for working with resin