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47 Topic Pages Found in Health and starting with the letter S
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Open Salmonella

Any of a very varied group of bacteria, genus Salmonella , that colonize the intestines of humans and some animals. Some strains cause typhoid and


( săl´´mənĕlō'sĭs ), any of a group of infectious diseases caused by intestinal bacteria of the genus Salmonella, including typhoid fever ,


fluid in plants consisting of water and dissolved substances. Cell sap refers to this fluid present in the large vacuole, or cell cavity, that


Highly infectious disease with symptoms similar to influenza, notably chills, headaches, muscle pains, a sore throat, and a high fever. Pneumonia

Open Schistosomiasis

( shĭs'təsōmì'əsĭs ), bilharziasis, or snail fever, parasitic disease caused by blood flukes, trematode worms of the genus Schistosoma. Three species

Open Schizophrenia

An overall title for a group of psychiatric disorders typfied by disturbances in thinking, behaviour and emotional response. The illness is disabling,

Open School Lunch Programs
School Lunch Programs

Established in 1946, the National School Lunch Program (NSLP) is a federal program that enables schools to provide low-cost or free nutritious lunches


deficiency disorder resulting from a lack of vitamin C (ascorbic acid) in the diet. Scurvy does not occur in most animals because they can synthesize

seasonal affective disorder

(SAD), recurrent fall or winter depression characterized by excessive sleeping, social withdrawal, depression, overeating, and pronounced weight gain.


Sedatives are drugs that produce sleep or drowsiness by depressing central nervous system (CNS) function. There are a number of drugs and drug classes