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Streptobacillary rat-bite fever occurs up to 22 days after the initial bite or scratch
Shots of procaine penicillin G or penicillin V by mouth are effective against both streptobacillary and spirillary rat-bite fever
Rat-Bite fever is a rare disease caused by a bacterium called Streptobacillus moniliformis. This bacterium is found worldwide. However, in Asia, the bacterium Spirillum minus also causes Rat-Bite fever. 50-100 % of wild rats carry this disease.
Streptobacillary rat-bite fever
Spirillary rat-bite fever
It is found in the United States
Although rash is less common than with streptobacillary rat-bite fever, there may be a lightly rosy, itchy rash all over the body
Rat-bite fever occurs most often among laboratory workers who handle lab rats in their jobs, and among people who live in poor conditions, with rodent infestation
With treatment, prognosis is excellent for both types of rat-bite fever. Without treatment, the spirillary form usually resolves on its own, although it may take up to a year to do so
Rats, mice, squirrels, weasels, dogs, and cats