Search results
Results From The WOW.Com Content Network
The smallpox vaccine is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus. Cowpox served as a natural vaccine until the modern smallpox vaccine emerged in the ...
The history of smallpox extends into pre-history. [ 1] Genetic evidence suggests that the smallpox virus emerged 3,000 to 4,000 years ago. [ 2] Prior to that, similar ancestral viruses circulated, but possibly only in other mammals, and possibly with different symptoms. Only a few written reports dating from about 500 AD to 1000 AD are ...
Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, [10] making smallpox the only human disease to have been eradicated to date.
Tuberculosis ( TB ), also known colloquially as the " white death ", or historically as consumption, [7] is an infectious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs, but it can also affect other parts of the body. [1] Most infections show no symptoms, in which case it is ...
People living in the same home as a person with leprosy are suggested to take a BCG booster which may improve their immunity by 56%. [80] [81] Development of a more effective vaccine is ongoing. [14] [82] [83] [84] A novel vaccine called LepVax entered clinical trials in 2017 with the first encouraging results reported on 24 participants ...
Rinderpest is believed to have originated in Asia, and to have spread by transport of cattle. [ 5][ 6][ 7] The term Rinderpest ( German: [ˈʁɪndɐˌpɛst] ⓘ) is a German word meaning "cattle plague". [ 2][ 7] The rinderpest virus (RPV) is closely related to the measles and canine distemper viruses. [ 8] The measles virus may have emerged ...
The 1 million cases in Europe resulted in 50,000 deaths. [citation needed] During 1948 in Kyoto, 68 of 606 children died after diphtheria immunization due to improper manufacture of aluminum phosphate toxoid. [62] In 1974, the World Health Organization included DPT vaccine in their Expanded Programme on Immunization for developing countries ...
25,000,000 – 50,000,000 (estimated) The Black Death was a bubonic plague pandemic occurring in Europe from 1346 to 1353. It was one of the most fatal pandemics in human history; as many as 50 million people [ 2] perished, perhaps 50% of Europe's 14th century population. [ 3] The disease is caused by the bacterium Yersinia pestis and spread by ...