Search results
Results from the WOW.Com Content Network
The smallpox vaccine is used to prevent smallpox infection caused by the variola virus. [10] It 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 ...
Smallpox is the first disease, and so far the only infectious disease of humans, to be eradicated by deliberate intervention. [6] It became the first disease for which there was an effective vaccine in 1798 when Edward Jenner showed the protective effect of inoculation (vaccination) of humans with material from cowpox lesions. [10]
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.
Most of the confusion here stems from the fact that the virus inside smallpox vaccines isn’t found in nature. Vaccinia virus seems to only exist in laboratories, not in any biological hosts.
The disease is mainly spread by carriers, people who have the bacteria in their nose and throat but do not have symptoms. The symptoms for this disease vary, depending on the part of the body that is infected. [31] Some side effects are: bronchitis; ear infections; pneumonia; bacteremia (bloodstream infection) bacteremia can result in the loss ...
He was transferred to Cardinal Hayes Convalescent Home for Children, a Catholic nursing facility in Millbrook, New York. He subsequently developed a rash and fever. It was later determined that he had smallpox and was the source of infection for three others at the facility, including a 62-year-old nun, a 5-year-old boy, and a 2-year-old girl.
According to the CDC, monkeypox is closely related to the virus that causes smallpox. Both the CDC and the WHO have published data showing that the smallpox vaccine is 85% effective in preventing ...
1977 – First vaccine for pneumonia (Streptococcus pneumoniae) 1978 – First vaccine for meningitis (Neisseria meningitidis) 1980 – Smallpox declared eradicated worldwide due to vaccination efforts; 1981 – First vaccine for hepatitis B (first vaccine to target a cause of cancer) 1984 – First vaccine for chicken pox