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Question: ID

A 10yo boy obtained a pet rat from a commercial pet store. Upon returning home, his new pet promptly bit him. 5 days later, he has fever, chills, severe headache, polyarthralgias, and a maculopapular rash with some petechiae that developed after 2 days of fever. What organism is the most likely cause for the boy’s symptoms?

A. Staphylococcus aureus

B. Group A Streptococcus pyogenes

C. Eikenella corrodens

D. Rabies virus

E. Streptobacillus moniliformus

IDWound Management

pemsou5_wp • July 4, 2017

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  1. Kelly July 6, 2017 - 1:53 am Reply

    E. Streptobacillus moniliformus

    The patient is suffering from rat-bite fever, caused by Streptobacillus moniliformus or, more often in Asia, Spirillum minus. Symptoms occur 3-10 days (up to 3 weeks) after contact with an infected rodent, and any bite may be healed by the time of presentation. Rash occurs within 2-4 days after fever. Before the rash, the patient is often misdiagnosed as flu-like illness. The infection can be fatal, and should be treated ASAP with penicillin or doxycycline. A boy did die recently from this scenario Staph and strep cause skin and soft tissue infections such as abscesses and cellulitis. Eikenella is associated with human bite infections. Rats are not a high risk animal for rabies transmission.

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