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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.
The polio vaccine has all but obliterated the illness that once killed thousands and paralyzed 15,000 people nationwide every year. ... is a distinctly contagious illness caused by a virus called ...
Vaccine contamination with Simian vacuolating virus 40, known as SV40 occurred in the United States and other countries between 1955 and 1961.. SV40 is a monkey virus that has the potential to cause cancer in animals and humans, although this is considered very unlikely and there have been no known human cases. [1]
The hypothesis that SV40 might cause cancer in humans was a particularly controversial area of research, fuelled by the historical contamination of some batches of polio vaccine with SV40 in the 1950s and 1960s. [4] "Persuasive evidence now indicates that SV40 is causing infections in humans today and represents an emerging pathogen."
Vaccines Are Lifesaving. The World Health Organization reports that global vaccine efforts have saved an estimated 154 million people worldwide, or the equivalent of six lives every minute of ...
The number of polio cases globally has dropped by more than 99% since the global effort to wipe out the disease led by the World Health Organization and others began in 1988. ... polio vaccine ...
The Horwin's son Alexander Horwin was born on June 7, 1996, and was given oral polio vaccine in November 1997. On August 10, 1998, Alexander was diagnosed with medulloblastoma , a malignant (cancerous) pediatric brain tumor , leading to his death on January 31, 1999.
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 ...