Deck 18: Viral Infections

Question 1

The disease known as severe acute respiratory syndrome (SARS) is caused by a type of:
a. coronavirus.
b. herpes virus.
c. papillomavirus.
d. picornavirus.

Answer 1

(a) The Herpes virus causes fever blisters and genital infections. Thus, the option (b) is incorrect.
(b) The papillomavirus causes oncogenic warts. Thus, the option (c) is incorrect.
(c) The picornavirus causes poliomyelitis. Thus, the option (d) is incorrect.
(d) The Severe Acute Respiratory Syndrome (SARS) is caused by the SARS-associated coronavirus. Therefore, answer (a) Coronavirus is correct.

Question 2

Which of the following is the cause of smallpox?
a. vaccinia virus
b. varicella virus
c. variola virus
d. none of the preceding choices

Answer 2

(a) The Vaccinia virus causes cowpox. Thus, the option (a) is incorrect.
(b) Varicella virus causes disease known as chickenpox. Thus, the option (b) is incorrect.
(c) The option (d) is wrong, because the Vaccinia virus and Varicella virus also causative factors of some diseases. Thus, the option (d) is incorrect.
(d) Smallpox is caused by the Variola virus. Hence, the option (c) Variola virus is correct.

Question 3

Which of the following are considered to be oncogenic?
a. Epstein-Barr virus and HPVs
b. HIV and Ebola virus
c. rubella and rubeola viruses
d. variola and varicella viruses

Answer 3

(a) HIV (human immunodeficiency virus) and Ebola viruses are do not have oncogenic nature. Thus, the given option (b) is incorrect.
(b) Rubella and rubeola viruses cause German measles and measles respectively. They are not oncogenic. Thus, the given option (c) is incorrect.
(c) Variola and varicella viruses cause smallpox and chickenpox respectively. They are also not oncogenic. Thus, the option (d) is incorrect.
(d) Both, the Epstein-Barr virus and human papilloma viruses (HPV) are cancer-causing or oncogenic. Hence, answer option (a) Epstein-Barr virus and human papilloma virus (HPV) is correct.

Question 4

Laboratory diagnosis of HIV infection is usually made by which of the following?
a. electron microscopy
b. growth of HIV in cell culture
c. growth of HIV in embryonated chicken eggs
d. immunodiagnostic procedures for the detection of antigen and antibodies

Question 5

Which of the following is also known as infectious hepatitis?
a. HAV
b. HBV
c. HCV
d. HDV

Question 6

Mosquitoes serve as vectors in all of the following viral diseases, except:
a. dengue fever.
b. hepatitis.
c. West Nile virus disease.
d. yellow fever.

Question 7

Which of the following viruses is/are not transmitted sexually?
a. hantavirus
b. HSVs
c. HIV
d. papillomaviruses

Question 8

Which of the following is a DNA virus?
a. HAV
b. HBV
c. HCV
d. HDV

Question 9

Which of the following is a type of herpes virus?
a. Epstein-Barr virus
b. measles virus
c. mumps virus
d. rabies virus

Question 10

Which of the following viral diseases has been acquired in the United States by handling pet prairie dogs?
a. chickenpox
b. hantavirus
c. monkeypox
d. smallpox