Group A streptococcal pharyngitis

Area of Science:

• Infectious Diseases
• Microbiology
• Pediatrics
• Internal Medicine

Background:

• Acute pharyngitis is a frequent upper respiratory infection affecting both pediatric and adult populations.
• While viruses are the most common cause, group A beta-hemolytic streptococci (GABHS) account for a significant percentage of cases, particularly in children (20%) and adults (5%).
• Clinical presentations vary widely, from mild throat discomfort to severe symptoms like high fever and pain, necessitating a broad differential diagnosis.

Purpose of the Study:

• To review the etiology, diagnosis, and management of acute pharyngitis, with a focus on GABHS infections.
• To emphasize the importance of accurate diagnosis and appropriate treatment to prevent sequelae.

Main Methods:

• Review of current medical literature on acute pharyngitis and GABHS infections.
• Discussion of diagnostic modalities, including the role and selection criteria for throat cultures.
• Outline of recommended treatment guidelines for confirmed GABHS pharyngitis.

Main Results:

• Viral infections are the predominant cause of acute pharyngitis.
• Group A beta-hemolytic streptococci (GABHS) are a common bacterial cause, especially in children.
• Throat culture remains the gold standard for GABHS diagnosis, requiring careful patient selection for optimal sensitivity.

Conclusions:

• Accurate diagnosis of GABHS pharyngitis is essential for appropriate management.
• Penicillin is the recommended first-line antibiotic for documented GABHS infections.
• Timely treatment of GABHS pharyngitis is critical for preventing serious complications such as rheumatic fever and post-streptococcal glomerulonephritis.