WebSmallpox is a dangerous disease caused by a tiny germ called a virus. Smallpox once killed or scarred many people. However, in the late 20th century scientists fought the disease successfully. There have been no … Web1800 Dr. Benjamin Waterhouse gives the smallpox vaccine to his son and other family members. These smallpox vaccinations are the first in the U.S. 1855 Massachusetts is the first state to require that children have a smallpox vaccine before going to school to prevent the spread of smallpox in schools. 1980

The Rise and Fall of Smallpox - History

WebApr 7, 2024 · smallpox vaccine, preparation of vaccinia virus given to prevent smallpox. Vaccinia virus is a type of poxvirus that is closely related to variola major, the virus that causes smallpox, and exposure to vaccinia provides cross immunity against smallpox. The smallpox vaccine is effective in preventing infection in about 95 percent of individuals, … WebJun 28, 2016 · Smallpox is an ancient disease caused by the variola virus. Early symptoms include high fever and fatigue. The virus then produces a characteristic rash, particularly on the face, arms and legs. The resulting spots become filled with clear fluid and later, pus, and then form a crust, which eventually dries up and falls off. Smallpox was fatal ... how much is yahoo plus support cost

History of smallpox - Wikipedia

WebPacific epidemics [ edit] Island South East Asia [ edit]. During the 18th century, there were many major outbreaks of smallpox, driven possibly by... Australia [ edit]. Smallpox was … The initial symptoms were similar to other viral diseases that are still extant, such as influenza and the common cold: fever of at least 38.3 °C (101 °F), muscle pain, malaise, headache and fatigue. As the digestive tract was commonly involved, nausea, vomiting, and backache often occurred. The early prodromal stage usually lasted 2–4 days. By days 12–15, the first visible lesions – small r… WebMay 7, 2015 · Smallpox is believed to have first infected humans around the time of the earliest agricultural settlements some 12,000 years ago. No surviving evidence of it, … how much is yahoo stock