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Strep Throat (cont.)

Strep Throat Causes

Strep throat is caused by infection with Group A Streptococcus (GAS) bacteria, specifically Streptococcus pyogenes. The streptococcal infection invades the pharyngeal tissue and causes a localized inflammatory reaction. These bacterial organisms are often found in the throat or on the skin, and are responsible for other illnesses as well, such as impetigo (a skin infection). Some individuals may carry Group A Streptococcus in the throat or on the skin and not exhibit any signs or symptoms of disease (asymptomatic).

Is Strep Throat Contagious?

Strep throat is a contagious illness that is spread from person-to-person. It is usually transmitted by close contact with the saliva or nasal secretions from an infected individual, typically in the form of airborne respiratory droplets. For this reason, it is frequently seen in situations where individuals are in close proximity to each other, as in schools, college campuses, military barracks, day care centers, and family households. Food-borne outbreaks leading to strep throat are a very uncommon mode of transmission.

Medically Reviewed by a Doctor on 9/27/2013
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Read What Your Physician is Reading on Medscape

Streptococcal Infection, Group A »

Streptococcus pyogenes (group A Streptococcus) is one of the most important pathogens encountered in clinical practice.

Read More on Medscape Reference »


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