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PATH 3610 (67)
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Midterm

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Department
Pathology
Course
PATH 3610
Professor
c
Semester
Winter

Description
1 Name:________________________ Ontario V Veterinary y College Departme ent of Pathobiology Course: PATH* *3610 Princples of Disses Na me: ___________________________________ Examine rs: Dr RA Foster Student No: ______________________________ Secoond Term Examinat tion Answ wers INSTRU UCTIONS  This examinatin must be yur own work.  Thee time allod for the mination is0 minutes. ere are 32 arks in total.  All electronievices inclung but notmited to caulators, phes, personal diigitalnts andan computers must be turnedf and must nott be used duriing the exam..  No books or oter printedaterial should be used.  Permission to ave and retn to the m must be grnted by an vigilator who will accany you.  All examination materialscluding notpages, musbe handed iand shall not be takem them room.  Oncce the exanation is hded in, it wnot be reted until resed by the Curse Coordnator. Q Mark Out of 1 8 2 8 3 8 4 8 32 2 Name:______________________ Q UESTION 1 (8 MARKS ) Read the following and answer the questions below; Zambia has recorded 4396 cases of typhoid since it broke out 3 months ago, with 9 deaths. 13 cases are still undergoing treatment in Mufurila and 14 at Levy Mwanawasa General Hospital in Lusaka. Typhoid fever is a classical systemic infection caused by the typhoid bacillus, Salmonella enterica_ serotype Typhi, the most common cause of enteric fever. This Gram-negative bacterium only infects humans and causes severe diarrhea and septicemia. The disease is transmitted by ingestion of food, including dairy products, or water contaminated by excreta from patients or chronic carriers or when handled by infected persons. a. What type of disease transmission is this? (1 mark) Feco-oral (1) horizontal (0.5) b. Outline the mechanism by which infected individuals develop a fever? (2 marks) Endotoxin or necrosis – cytokines to blood – regulatory centre in brain – increase temperature by shivering c. Explain how this bacterium causes diarrhea? (2 marks) Toxins (0.5) - cause necrosis of mucosa/villi (0.5) – exudative diarrhea (1) d. What treatments would the people in hospital receive? (3 marks) Specific therapy (0.5) – antibiotics (0.5) Reduce workload (0.5) – dietary modification (0.5) Symptomatic therapy (0.5) – fluids, electrolytes, anything reasonable (0.5). 3 Name:______________________ Q UESTION 2 (8 MARKS ) R
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