Bothstrep throatandmonodo have similar symptoms, including a sore throat, fever, and swollen glands.

The more common scenario is that a child got infected with both by chance.

Or it is possible that one or both of the tests were a false positive.

A doctor checking a child’s throat

Tom Merton / Getty Images

Schmitt Pediatric Guidelines LLC.

Notes from the Field: Group A Streptococcal Pharyngitis Misdiagnoses at a Rural Urgent-Care Clinic Wyoming, March 2015.

Morbidity and Mortality Weekly Report (MMWR) Centers for Disease Control and Prevention.

64(50);1383-5

Highlights Of Prescribing Information.

US Food & Drug Administration.

Demuri GP, Wald ER.The Group A Streptococcal Carrier State Reviewed: Still an Enigma.J Pediatric Infect Dis Soc.