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1) Which of the following statements about sepsis is false? A) Symptoms include fever and decreased blood pressure. B) Lymphangitis may occur. C) Symptoms are due to bacterial endotoxin. D) It usually is caused by gram-positive bacteria. E) It may be aggravated by antibiotics.
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Answer: D
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2) Which of the following pairs is mismatched? A) Subacute bacterial endocarditis - alpha-hemolytic streptococci B) Acute bacterial endocarditis - Staphylococcus aureus C) Pericarditis - Streptococcus pneumoniae D) Puerperal sepsis - Staphylococcus aureus E) Burkitt's lymphoma - Epstein Barr virus
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Answer: D
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3) Which of the following grows outside host cells? A) Ehrlichia B) Brucella C) Rickettsia D) Bartonella E) Streptobacillus
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Answer: E
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4) Which of the following is NOT treated with penicillin? A) Pericarditis B) Tularemia C) Anthrax D) Listeriosis E) Rat-bite fever
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Answer: B
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5) Which of the following statements about tularemia is false? A) It is caused by Francisella tularensis. B) The reservoir is rabbits. C) It may be transmitted by arthropods. D) It may be transmitted by direct contact. E) It occurs only in California.
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Answer: E
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6) Which of the following is a symptom of brucellosis? A) A local infection B) Relapsing fever C) Undulant fever D) Pneumonia E) Jaundice
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Answer: C
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7) Which of the following is NOT transmitted in raw milk? A) Toxoplasmosis B) Anthrax C) Brucellosis D) Listeriosis E) All of the above can be transmitted in raw milk.
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Answer: A
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8) Which of the following is NOT a characteristic of Bacillus anthracis? A) Aerobic B) Gram-positive C) Forms endospores D) Found in soil E) Produces endotoxins
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Answer: E
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9) The symptoms of gas gangrene are due to all of the following EXCEPT A) Microbial fermentation. B) Necrotizing exotoxins. C) Proteolytic enzymes. D) Hyaluronidase. E) Anaerobic environment.
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Answer: E
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10) Which of the following bacterial infections CANNOT be transmitted by dog or cat bites? A) Pasteurella multocida B) Streptobacillus C) Bacteroides D) Fusobacterium E) All of the above can be transmitted by dog or cat bites.
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Answer: B
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11) Which of the following pairs is mismatched? A) Malaria - Anopheles (mosquito) B) Dengue - Aedes (mosquito) C) Epidemic typhus - Pediculus (louse) D) Rocky Mountain spotted fever - Dermacentor (tick) E) Encephalitis - Ixodes (tick)
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Answer: E
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12) Unsanitary and crowded conditions increase the incidence of all of the following diseases EXCEPT A) Plague. B) Epidemic typhus. C) Endemic murine typhus. D) Rocky Mountain spotted fever. E) Relapsing fever.
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Answer: D
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13) Which of the following statements about toxoplasmosis is false? A) It is caused by a protozoan. B) The reservoir is cats. C) It is transmitted by the gastrointestinal route. D) It is a severe illness in adults. E) It can be congenital.
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Answer: D
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14) Which of the following pairs does NOT apply to Chagas' disease? A) Causative agent - T. cruzi B) Vector - kissing bug C) Reservoir - rodents D) Diagnosis - serological tests for antibodies E) Treatment - Nifurtimox
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Answer: D
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15) Which of the following is NOT caused by a bacterium? A) Epidemic typhus B) Tickborne typhus C) Malaria D) Plague E) Relapsing fever
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Answer: C (caused by protozoan; treated with chloroquinine)
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16) A patient presents with inflammation of the heart valves, fever, malaise, and subcutaneous nodules at joints. The recommended treatment is A) Anti-inflammatory drugs. B) Streptomycin. C) Chloroquine. D) Hyperbaric chamber. E) Praziquantel.
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Answer: A (rheumatic fever?)
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17) Which of the following statements about puerperal sepsis is false? A) It is transmitted from mother to fetus. B) It is caused by health care personnel. C) It begins as a focal infection. D) It is a complication of abortion or childbirth. E) It doesn't occur anymore because of antibiotics and aseptic techniques.
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Answer: A (caused by strep pyogenes, nosocomial infection, tx with penicillin)
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18) Which of the following statements about schistosomiasis is false? A) The cercariae penetrate human skin. B) A parasite of birds causes swimmer's itch in humans. C) The intermediate host is an aquatic snail. D) It is caused by a roundworm. E) The female worm is attached to the male.
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Answer: D
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19) Which of the following statements about rheumatic fever is false? A) It is a complication of a group A beta-hemolytic streptococcal infection. B) It is an inflammation of the heart. C) It is an inflammation of the joints. D) It is cured with penicillin. E) The incidence has declined in the last 10 years.
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Answer: D
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20) Which of the following pairs is mismatched? A) Rickettsia - intracellular parasite B) Brucella - gram-negative aerobic rods C) Francisella - gram-positive facultatively anaerobic pleomorphic rods D) Bacillus - gram-positive endospore-forming rods E) None of the above
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Answer: C
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21) Which of the following can be transmitted from an infected mother to her fetus across the placenta? A) Borrelia B) Cytomegalovirus C) Spirillum D) Toxoplasma E) Yersinia
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Answer: B
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22) Which of the following pairs is mismatched? A) Borrelia - relapsing fever B) Yersinia - plague C) Streptobacillus - rat-bite fever D) Pasteurella - cat-scratch disease E) Spirillum - rat-bite fever
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Answer: D
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23) A patient has the following symptoms: a papule, enlarged lymph nodes. Microscopic examination of the papule reveals nucleated cells in white blood cells. The patient most likely has A) Anthrax. B) Brucellosis. C) Leishmaniasis. D) Malaria. E) Schistosomiasis.
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Answer: C
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24) Human-to-human transmission of plague is usually by A) Rat flea. B) Dog flea. C) The respiratory route. D) Wounds. E) Unsanitary conditions.
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Answer: C
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25) A characteristic symptom of plague is A) Small red spots on the skin. B) Bruises on the skin. C) Rose-colored spots. D) Recurrent fever. E) Nausea and vomiting.
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Answer: B
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26) Which of the following pairs regarding the epidemiology of malaria is mismatched? A) Vector - Anopheles B) Etiology - Plasmodium C) Found in liver - sporozoites D) Diagnosis - presence of merozoites E) Treatment - antibiotics
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Answer: E
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27) A predisposing factor for infection by Clostridium perfringens is A) Gangrene. B) Burns. C) Debridement. D) Hyperbaric treatment. E) An infected finger.
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Answer: A
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28) Which of the following is NOT a zoonosis? A) Puerperal sepsis B) Hantavirus infection C) Anthrax D) Brucellosis E) Tularemia
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Answer: A
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29) Arthropods can serve as a reservoir for which of the following diseases? A) Plague B) Brucellosis C) Epidemic typhus D) Yellow fever E) Malaria
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Answer: B
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30) Which of the following pairs is mismatched? A) Cat-scratch disease - malignant pustule developing into septicemia B) Brucellosis - a temperature of 40°C each evening C) Tularemia - a localized infection appearing as a small ulcer D) Borrelia - rash and flulike E) Toxoplasmosis - congenital brain damage
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Answer: A
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31) Which of the following CANNOT be transmitted to humans from domestic cats? A) Toxoplasmosis B) Plague C) Chagas' disease D) Bartonella E) None of these diseases is transmitted by cats.
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Answer: C
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32) Which of the following is the same for both relapsing fever and undulant fever? A) Vector B) Mode of transmission C) Presence of rash D) Reservoir E) Etiology
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Answer: A
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33) Which of the following is NOT treated with antibiotics? A) Plague B) Tularemia C) Lyme disease D) Yellow fever E) Anthrax
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Answer: D
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34) Which of the following produces a permanent carrier state following infection? A) Borrelia B) Cytomegalovirus C) Spirillum D) Toxoplasma E) Yersinia
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Answer: B
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35) EB virus has been implicated in all of the following EXCEPT A) Endocarditis. B) Infectious mononucleosis. C) Burkitt's lymphoma. D) Nasopharyngeal carcinoma. E) Hodgkin's disease.
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Answer: A
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36) Which of the following leads to all the others? A) Subcutaneous hemorrhaging B) Presence of antirickettsial antibodies C) Blockage of capillaries D) Bacterial growth in endothelial cells E) Breakage of capillaries
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Answer: D
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37) A patient complains of fever, severe muscle and joint pain, and a rash. The patient reports returning from a Caribbean vacation one week ago. Which one of the following do you suspect? A) Bolivian hemorrhagic fever B) Dengue C) Hantavirus hemorrhagic fever D) Typhus E) Yellow fever
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Answer: B
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38) Which of the following pairs is NOT correctly matched for Gram reaction? A) Lyme disease - gram-negative B) Tularemia - gram-negative C) Anthrax - gram-positive D) Rocky Mountain spotted fever - gram-negative E) Ehrlichia - gram-positive
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Answer: E
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39) Scrapings from a patient's rash reveal cercariae. The disease is most likely A) Lyme disease. B) Rocky Mountain spotted fever. C) Relapsing fever. D) Swimmer's itch. E) Chagas' disease.
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Answer: D
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40) You advise your pregnant friend to give her cat away because A) She could contract plague. B) She could give the cat tularemia. C) She could get toxoplasmosis. D) She could get listeriosis. E) You don't like cats and want to see your friend without one.
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Answer: C
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41) Which of the following is evidence that the arthritis afflicting children in Lyme, Connecticut, was due to bacterial infection? A) Treatable with penicillin B) Not contagious C) Accompanied by a rash D) Affected mostly children E) Transmitted by ticks
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Answer: A
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42) Which of the following is NOT controlled by a mosquito eradication program? A) Chikungunya fever B) Yellow fever C) Dengue D) Toxoplasmosis E) Malaria
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Answer: D
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43) A 62-year-old man was hospitalized with an 8-day history of fever, chills, sweats, and vomiting. His temperature on admission was 40°C. A routine peripheral blood smear revealed ring-shaped bodies in the RBCs. What treatment would you prescribe? A) Hyperbaric oxygen B) Mefloquine C) No treatment D) Penicillin E) Streptomycin
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Answer: B
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44) Which of the following statements about group B streptococci is false? A) They are present in healthy carriers. B) They cause gram-positive sepsis. C) They cause strep throat. D) They cause neonatal sepsis. E) They are classified as Str. agalactiae.
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Answer: C
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45) Bioweapons A) Are all respiratory pathogens. B) Are not susceptible to antibiotics. C) Are all viruses. D) Are impossible to detect. E) Have been used for centuries.
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Answer: E
