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Published on: November 16, 2016
Group A beta-hemolytic streptococcal pharyngitis in children
Alexander K C Leung1, James D Kellner
1Department of Pediatrics, University of Calgary, Alberta Children's Hospital Calgary, Alberta, Canada.
Insights
Group A beta-hemolytic streptococcus (GABHS) causes most childhood sore throats. Confirm GABHS with testing before antibiotics, as symptoms alone are unreliable for diagnosis.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Group A beta-hemolytic streptococcus (GABHS) is the leading bacterial cause of acute pharyngitis in children.
- Clinical diagnosis of GABHS pharyngitis is challenging due to nonspecific symptoms.
Purpose of the Study:
- To review diagnostic and therapeutic strategies for GABHS pharyngitis in children.
- To emphasize the importance of microbiologic confirmation before antibiotic treatment.
Main Methods:
- Literature review of diagnostic criteria and treatment guidelines for GABHS pharyngitis.
- Discussion of clinical score systems for guiding diagnostic testing.
Main Results:
- Clinical presentation alone is insufficient for accurate GABHS pharyngitis diagnosis.
- Throat culture or rapid antigen detection tests are essential for confirmation.
- Clinical score systems can aid in judicious antibiotic use.
Conclusions:
- Prompt antibiotic therapy is recommended upon confirmed GABHS diagnosis.
- Penicillin V is the preferred antibiotic, with alternatives for specific patient circumstances.
- Unnecessary antibiotic use should be minimized through appropriate diagnostic testing.
Abstract:
Group A beta-hemolytic streptococcus (GABHS) is the most common bacterial cause of acute pharyngitis in children. Because clinical findings can be nonspecific, even experienced physicians cannot reliably diagnose GABHS pharyngitis solely on the basis of clinical presentation. Suspected cases should be confirmed by a throat culture or a rapid antigen detection test before antibiotic therapy is initiated. Microbiologic testing is generally not necessary in patients with pharyngitis whose clinical and epidemiologic findings are not suggestive of GABHS. Clinical score systems have been developed to help physicians decide which patients should undergo diagnostic testing and to reduce the unnecessary use of antibiotics. Antibiotic therapy should be initiated as soon as the diagnosis is confirmed. Penicillin V remains the drug of choice. Alternative therapy, e.g., with cephalosporin or macrolide, is often sought because of penicillin allergy, noncompliance, and treatment failure.
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Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
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Bacterial Meningitis I: Introduction
Bacterial Gastroenteritis
Bacterial Meningitis II: Pathophysiology
