Sodoku

Sodoku
Classification and external resources
Specialty	infectious disease
ICD-10	A25.0
ICD-9-CM	026.0
DiseasesDB	32803
MedlinePlus	001348
MeSH	D011906
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Sodoku (鼠毒) is a bacterial zoonotic disease. It is caused by the Gram-negative rod Spirillum minus (also known as Spirillium minor). It is a form of rat-bite fever (RBF).

The infections are acquired through rat bites or scratches. It can occur as nosocomial infections (i.e., acquired from hospitals), or due to exposure or close associations with animals preying on rats, mice, squirrels, etc. Sodoku is mostly seen in Asia. The incubation period is 4 to 28 days.

The initial scratch or wound caused by a bite from a carrier rodent results in mild inflammatory reactions and ulcerations. The wounds may heal initially, but reappear with the onset of symptoms. The symptoms include recurring fever, with body temperature 101–104°F (38–40°C). The fever lasts for 2–4 days, but recurs generally at 4–8 weeks. This cycle may continue for months or years. The other symptoms include regional lymphadenitis, malaise, and headache. The complications include myocarditis, endocarditis, hepatitis, splenomegaly, and meningitis.

Mortality ranges from 6-10%.

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