Streptococcal pharyngitis in a paediatric emergency department

Area of Science:

• Pediatric Infectious Diseases
• Microbiology
• Clinical Medicine

Background:

• Acute pharyngitis is a common childhood illness.
• Identifying streptococcal infections is crucial for appropriate antibiotic use.
• Beta-haemolytic streptococci, particularly Group A (GABHS), are significant pathogens.

Purpose of the Study:

• To determine the prevalence of beta-haemolytic streptococcal infections in children with acute pharyngitis.
• To identify clinical features associated with GABHS.
• To guide antibiotic therapy decisions for pediatric pharyngitis.

Main Methods:

• Prospective case-control study involving 271 children with pharyngitis and 135 age-matched controls.
• Oropharyngeal cultures were used to detect groups A, C, and G beta-haemolytic streptococci.
• Demographic and clinical characteristics were recorded for all participants.

Main Results:

• GABHS was isolated in 21% of children with pharyngitis compared to 7% in controls (OR, 3.7; P < 0.001).
• Groups C and G beta-haemolytic streptococci were found in 4% and 2% of cases, respectively.
• Clinical features associated with GABHS included age ≥ 4 years, tender cervical nodes, pharyngotonsillitis, absent coryza, and scarlatiniform rash.

Conclusions:

• GABHS is an unlikely cause of acute pharyngitis in children under 4 years, where symptomatic treatment may suffice.
• In children aged 4 years and older, the likelihood of GABHS increases with the presence of a rash, pharyngotonsillitis, and tender cervical nodes.
• Clinical assessment aids in determining the need for antibiotic therapy in pediatric acute pharyngitis.