non nb qs very nice - sooohia

[ArchivalUser]

A 4-year-old child living in a slum is bitten by a rat while sleeping. Two days later, the child develops a rash characterized by discrete erythematous 1-4 mm macules on the extremities
and face, most obvious on the palms and soles. Which of the following organisms is the most likely cause of this child's disease?



Options:

A. Borrelia burgdorferi

B. Pseudomonas mallei

C. Pseudomonas pseudomallei

D. Spirillium minus

E. Streptobacillus moniliformis

[ArchivalUser]

A. tics bite-- lyme dis

[ArchivalUser]

I ALSO ANSWERED A BUT ITS EE

The correct answer is E. The child has "rat-bite fever." This occurs in two forms with somewhat similar clinical manifestations. The form this child has is the Haverhill fever form, caused by Streptobacillus moniliformis and characterized by a short (often 1-3 days) incubation period. The
Haverhill form is more common in the United States than the Sodoku form, which is caused by Spirillium minus, has a 1-4 week incubation period, and is most prevalent in Japan. One of the
problems with diagnosing these diseases is that the victims are usually young children, and the bite site may be inapparent by the time the disease becomes severe enough for the child to be taken to a doctor.