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National Institutes of Health

(Encyclopedia)National Institutes of Health (NIH), agency of the U.S. Public Health Service, with headquarters in Bethesda, Md. It was established initially in 1887 as a laboratory in the U.S. Marine Hospital on St...

norovirus

(Encyclopedia)norovirus or Norwalk virus, highly contagious viral disease caused by infection with an RNA virus of the genus Norovirus. The virus causes acute gastroenteritis, usually one to two days after infectio...

Panama, city, Panama

(Encyclopedia)Panama, city (1990 pop. 584,803), central Panama, capital and largest city of Panama, on the Gulf of Panama. Founded in 1519 by Pedro Arias de Ávila, the city flourished in early colonial times as th...

trypanosomiasis

(Encyclopedia)trypanosomiasis trəpănˌəsōmīˈəsis [key], infectious disease caused by a protozoan organism, the trypanosome, which exists as a parasite in the blood of a number of vertebrate hosts. The three ...

mad cow disease

(Encyclopedia)mad cow disease: see prion.

Marburg virus disease

(Encyclopedia)Marburg virus disease, formerly known as Marburg virus hemorrhagic fever, disease caused by infection with a Marburg virus, a filovirus that belongs to a family (Filoviridae) of RNA viruses that also ...

motor neuron disease

(Encyclopedia)motor neuron disease: see amyotrophic lateral sclerosis. ...

hyaline membrane disease

(Encyclopedia)hyaline membrane disease: see infant respiratory distress syndrome. ...

Dutch elm disease

(Encyclopedia)Dutch elm disease: see diseases of plants; elm. ...

congenital heart disease

(Encyclopedia)congenital heart disease, any defect in the heart present at birth. There is evidence that some congenital heart defects are inherited, but the cause of most cases is unknown. One known cause is infec...