Group A streptococcal infection

Group A streptococcal infection

Streptococcus pyogenes

Group A streptococcal infection is an infection caused by Streptococcus pyogenes, a bacterium that is also known as Group A streptococcus (GAS). GAS infections can range from mild skin infections or sore throats to severe, life-threatening conditions such as necrotizing fasciitis and streptococcal toxic shock syndrome.

Causes

Group A streptococcal infections are caused by Streptococcus pyogenes, a bacterium that is often found in the throat and on the skin. People may carry the bacteria and have no symptoms of illness, but they can still spread the infection to others. The bacteria are spread through direct contact with mucus from the nose or throat of persons who are infected or through contact with infected wounds or sores on the skin.

Symptoms

The symptoms of a Group A streptococcal infection depend on the part of the body that is infected. It can cause illnesses including pharyngitis, impetigo, cellulitis, erysipelas, and scarlet fever. In rare cases, it can cause severe illnesses such as necrotizing fasciitis, streptococcal toxic shock syndrome, and rheumatic fever.

Diagnosis

Diagnosis of a Group A streptococcal infection is typically made through a physical examination and a review of the patient's medical history. In some cases, a throat swab or a sample of tissue or pus from a wound may be taken for laboratory testing.

Treatment

Treatment for Group A streptococcal infections typically involves antibiotics to kill the bacteria. In severe cases, surgery may be needed to remove infected tissue. It is important to complete the full course of antibiotics even if symptoms improve before the medication is finished.

Prevention

Prevention of Group A streptococcal infections involves good hygiene practices such as regular hand washing, not sharing personal items like toothbrushes or eating utensils, and covering the mouth and nose when coughing or sneezing.

See also

• Streptococcal pharyngitis
• Rheumatic fever
• Scarlet fever
• Necrotizing fasciitis
• Streptococcal toxic shock syndrome

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