Streptobatsillez
Streptobatsillez (heyverhillskaya fever) – an acute infectious disease of the groups of zoonoses with a contact or fecal-oral mechanism of transmission, is characterized by fever, intoxication, rash and arthritis.
History and distribution. Due to the great similarity of the mechanism of infection (rat bite) and the clinical picture streptobatsillez first merged with the disease caused by S. minus one nozoformu – Sodoku. However, there are significant differences. In particular, different pathogens are, therefore, currently streptobatsillez as a separate nozoformu. Sporadic cases of illness were recorded in many countries, described the outbreak in 1926 in Haverhill (USA), where about 90 people became ill.
Etiology. Pathogen Streptobacillus moniliformis – Grampositive polymorphic bacillus, unstable in the environment.
Epidemiology. The source of the pathogen are often rats, other rodents rarely, whose wand inhabits the mucous membranes of the mouth and upper respiratory tract. Infection occurs when a sting of rodents, including laboratory white rats. It is also possible infection with the use of water and food contaminated with rodent droppings and not passed before the use of heat treatment.
Clinical picture. The incubation period from 2 to 10 days. Start acute. Appear suddenly chills, headache, myalgia. Primary affect and adenopathy are rare. Characteristic appearance of polymorphic (spotted, petechial) rash on the trunk and extremities. Often develop mono-and polyarthritis. Duration of fever up to 2 weeks, often suffer relapses.
Of the possible complications of endocarditis, soft tissue abscesses, pneumonia, sepsis.
Diagnosis and differential diagnosis. The diagnosis is established on the basis of clinical illness, her relationship with rat bite and confirm bacteriological studies of blood, joint fluid, serological methods (agglutination reaction and complement fixation).
The differential diagnosis spend with relapsed tifami, malaria, sepsis, leptospirosis, rat bite fever. Patients were hospitalized.
Treatment. Assign penicillin, tetracycline number of drugs, levomitsetin secondary therapeutic doses for 5-7 days. Without the use of antibiotics lethality reaches 7-10%.
Prevention focuses on control of rodents, protection against their bites, compliance with rules governing the storage of food.