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Poliomyelitis (/ ˌ p oʊ l i oʊ ˌ m aɪ ə ˈ l aɪ t ɪ s / POH-lee-oh-MY-ə-LY-tiss), commonly shortened to polio, is an infectious disease caused by the poliovirus. [1] Approximately 75% of cases are asymptomatic; [5] mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe symptoms develop such as headache, neck stiffness, and paresthesia.
1954 – Alexander D. Langmuir, M.D., M.P.H., set up a leptospirosis laboratory in Jacksonville, Florida. 1955 – CDC established the Polio Surveillance Program. 1956 – Dr. William Cherry found the first practical use for the fluorescent technique, which was successful in identifying pathogens that might be used in biological warfare.
In the early 1950s, before Salk’s vaccine, polio outbreaks caused more than 15,000 cases of paralysis each year, the CDC said. After the vaccines — there are two: trivalent inactivated ...
Polio: An American Story by David M. Oshinsky, professor of history at the University of Texas at Austin, documents the polio epidemic in the United States during the 1940s and 1950s and the race to develop a vaccine, which led to 2 different types of polio vaccine: inactivated poliovirus vaccine, developed by a team led by Jonas Salk, and oral poliovirus vaccine, developed by a team led by ...
The polio vaccines prevented 29 million cases of paralytic polio between 1960 and 2021, compared with a counterfactual world with no vaccines, according to researchers’ estimates.
Smoking: Smokers start in their teenage years and it affects their death rates decades later. After 1920 the dramatic rise in smoking rates contributed to increased mortality from cancer and from strokes and heart attacks caused by cardiovascular disease. By the late 20th century smoking had sharply declined among better educated groups. [41]
Polio is a life-threatening disease caused by the poliovirus. High temperature. Extreme fatigue. Headaches. Vomiting. Neck stiffness. Muscle pain. Symptoms of polio include a high temperature ...
A few years later, during a polio outbreak in Canada, "masked bandits" stole 75,000 Salk vaccine shots from a Montreal university research center. [25] Just months after the vaccine's success was announced, American President Eisenhower signed the Polio Vaccination Assistance Act of 1955, to ensure the vaccine would be distributed to the public ...