D. T. Watson Home for Crippled Children

D. T. Watson Home for Crippled Children
	Pennsylvania Historical Marker
PHMC dedicated	October 19, 2018

Last updated June 03, 2019

The D.T. Watson Home for Crippled Children is famous as one of the first sites in the world to test the Jonas Salk vaccine for polio in 1954. The home is located in the Pittsburgh suburb of Leet Township near Sewickley, in the U.S. state of Pennsylvania.

Jonas Edward Salk was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended the City College of New York and New York University School of Medicine, later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a physician scientist at Mount Sinai Hospital. Two years later he was granted a fellowship at the University of Michigan, where he would study flu viruses with his mentor Thomas Francis, Jr.

Polio, also called poliomyelitis or infantile paralysis, is an infectious disease caused by the poliovirus. In about 0.5 percent of cases there is muscle weakness resulting in an inability to move. This can occur over a few hours to a few days. The weakness most often involves the legs but may less commonly involve the muscles of the head, neck and diaphragm. Many people fully recover. In those with muscle weakness about 2 to 5 percent of children and 15 to 30 percent of adults die. Another 25 percent of people have minor symptoms such as fever and a sore throat and up to 5 percent have headache, neck stiffness and pains in the arms and legs. These people are usually back to normal within one or two weeks. In up to 70 percent of infections there are no symptoms. Years after recovery post-polio syndrome may occur, with a slow development of muscle weakness similar to that which the person had during the initial infection.

Sewickley, Pennsylvania Borough in Pennsylvania, United States

Sewickley is a borough in Allegheny County, Pennsylvania, 12 miles (19 km) west northwest of Pittsburgh along the Ohio River. It is a residential suburb of Pittsburgh. The population was 3,827 at the 2010 census. The Sewickley Bridge crosses the Ohio River at Sewickley.

External links

The Watson Institute and Home for Crippled Children

Coordinates: 40°34′27″N80°12′19″W / 40.57406°N 80.20517°W / 40.57406; -80.20517

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.

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