Management of Recurrent Pharyngitis in Chronic GAS Carriers

Understanding the Clinical Picture

Chronic GAS carriers harbor streptococci in their pharynx for months and frequently experience intercurrent viral infections that can be mistaken for acute streptococcal pharyngitis when testing reveals GAS presence, according to the Infectious Diseases Society of America 1, 3
Up to 20% of asymptomatic school-aged children may be chronic carriers during winter and spring, as reported by the Centers for Disease Control and Prevention 3
Carriers show no immunologic response to the organism and are at very low risk for suppurative or nonsuppurative complications like rheumatic fever, as stated by the American Academy of Pediatrics 1, 3

Every suspected episode must be confirmed with rapid antigen detection test (RADT) or throat culture, as recommended by the American Academy of Family Physicians 2, 4
A positive RADT is diagnostic and does not require backup culture in this age group, according to the Infectious Diseases Society of America 2
Key clinical clues suggesting viral (not bacterial) pharyngitis include: cough, rhinorrhea, hoarseness, oral ulcers, conjunctivitis, or gradual onset, as identified by the American College of Physicians 5, 4

First-generation cephalosporins are the preferred alternative: cephalexin 20 mg/kg per dose twice daily (maximum 500 mg per dose) for 10 days, as recommended by the American Academy of Pediatrics 2, 4
Clindamycin 7 mg/kg per dose three times daily (maximum 300 mg per dose) for 10 days is another option, according to the Infectious Diseases Society of America 2, 4
Azithromycin 12 mg/kg once daily (maximum 500 mg) for 5 days, though macrolide resistance varies geographically, as reported by the Centers for Disease Control and Prevention 2, 4

Antimicrobial therapy to eradicate carriage is NOT routinely indicated but may be considered in special circumstances, such as during community outbreaks of rheumatic fever or invasive GAS, as stated by the American Heart Association 1, 3
Effective regimens for eradication include clindamycin, amoxicillin-clavulanate, or penicillin V plus rifampin, according to the Infectious Diseases Society of America 1

Reassure that nosebleeds are common in adolescents and likely unrelated to antibiotic choice, as stated by the American Academy of Pediatrics 4
Consider nasal saline spray or humidification if nasal mucosa appears dry, as recommended by the American College of Physicians 4