Qnt351 Week 3 Quiz

Question 1
5 out of 5 points Consider the following three common agents of bacterial meningitis: Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae B. Which of the following would be most helpful in differentiating these three agents?
Answer
Selected Answer: gram-stain morphology
Question 2
5 out of 5 points The current first choice of antibiotic for bacterial meningitis is ________.
Answer
Selected Answer: cephalosporin Question 3
5 out of 5 points Vaccination is recommended to prevent epidemic meningitis among college students and military recruits resulting from infection with ________.
Answer
Selected Answer:
Neisseria meningitidis
Question 4
5 out of 5 points The most
important element in the pathogenicity of S. pneumoniae is ________.
Answer
Selected Answer: the capsule
Question 5
5 out of 5 points The diagnosis of bacterial meningitis requires a sample of ________.
Answer
Selected Answer: cerebrospinal fluid
Question 6
5 out of 5 points Which of the following diseases is not caused by a prion?
Answer
Selected Answer:
African sleeping sickness
Question 7
5 out of 5 points Treatment for rabies exposure requires ________.
Answer
Selected Answer: injections of antirabies vaccine and immune globulin
Question 8
5 out of 5 points Which disease may be transmitted by contaminated dairy products?
Answer
Selected Answer: listeriosis Question 9
5 out of 5 points All of these statements are true about botulism except:
Answer
Selected Answer:
Antibiotics are the first choice of treatment.
Question 10
5 out of 5 points Which of the following is used to diagnose West Nile encephalitis?
Answer
Selected Answer:
ELISA test for IgM antibodies
Question 11
5 out of 5 points Reservoirs for rabies include the following, except ________.
Answer
Selected Answer: mosquitoes Question 12
5 out of 5 points Which of these vaccines has actually been implicated in causing the disease it is designed to prevent?
Answer
Selected Answer:
Sabin oral polio vaccine
Question 13
5 out of 5 points A migrant farmworker has been brought into the emergency room showing early symptoms of tetanus. He indicates that he had received a puncture wound in his hand a week before the onset of symptoms. When asked about vaccination or booster, he did not know whether he had ever been vaccinated. Which of the following should be administered to the patient as soon as possible?
Answer
Selected Answer: tetanus immune globulin
Question 14
5 out of 5 points A 10-month-old infant has become constipated and demonstrates muscular weakness by her inability to sit up or crawl. Her muscle tone is continuing to deteriorate, and she is beginning to have difficulty holding her head up. While questioning her mother to get more information, the doctor noted that the infant's cereal had been sweetened with honey for the last 10 days. What is a likely diagnosis?
Answer
Selected Answer: infant botulism
Question 15
5 out of 5 points What is the best way to control West Nile encephalitis?
Answer
Selected Answer:
Eliminate the vector.
Question 16
5 out of 5
points Which method is best for controlling African trypanosomiasis?
Answer
Selected Answer:
Control the vector.
Question 17
5 out of 5 points An otherwise healthy 19-year-old college student was admitted to the emergency room with a fever, bad headache, and a stiff neck, symptoms suggestive of meningitis. A spinal tap was done. The CSF was cloudy, and the cell count on the fluid was 500 WBC/ml. The differential WBC count of the CSF showed predominantly neutrophils. The CSF glucose was decreased, and the CSF protein was elevated. The Gram stain showed gram-negative diplococci. The most likely etiologic agent is ________.
Answer
Selected Answer:
Neisseria meningitidis
Question 18
5 out of 5 points Naegleria encephalitis is commonly acquired by ________.
Answer
Selected Answer: children swimming in ponds and streams
Question 19
5 out of 5 points Which of these statements is true concerning foodborne botulism in older children and adults?
Answer
Selected Answer:
Disease results from consuming botulismtoxin in improperly preserved foods.
Question 20
5 out of 5 points Which of the following begins as a lung infection but may cause meningitis in immunosuppressed individuals?
Answer
Selected Answer:
cryptococcosis