msyamp
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D
CAT VS RAT
spirillum minus causes rat bite fever.
rat urine -- leptospira
cat bite -- pasturella
cat scratch -- bartonella
cat feces -- toxoplasma
Edited by msyamp on 01/16/06 - 12:08 AM
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| drswapna
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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.
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| drswapna
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so answer is E
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| reet
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so... E and D are diffrentisted on basis of incubation period????
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| sturge_weber
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yes the answer is streptobacilllus moniliformis
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| robin082006
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you got it
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| Geroo
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streptobacilllus moniliformis can someone give some details about this organism?
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| robin082006
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here is Kaplan's explanation
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.
Borrelia burgdorferi(choice A) causes Lyme disease, which is characterized by an expanding erythematous rash, arthralgias, and eventual nervous system involvement.
Pseudomonas mallei(choice B) causes glanders, which generally affects horses or humans in close contact with equines.
Pseudomonas pseudomallei(choice C) causes melioidosis, a rare pulmonary disease found mostly in Southeast Asia.
Spirillium minus(choice D) causes the Sodoku form of rat-bite fever.
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| bactitech
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Please do realize that all four of these organisms are extremely esoteric and rarely isolated in microbiology labs, at least in the U.S. I have worked in micro over 30 years and have never seen any of these.
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