Question 1

A patient presents with jaundice, fatigue, and elevated liver enzymes. Laboratory tests confirm the presence of a DNA virus transmitted through blood and sexual contact. Which viral disease is most likely responsible for these symptoms?

Accepted Answer

Hepatitis B

Question 2

Which of the following viral diseases is caused by a retrovirus that targets CD4+ T cells, leading to immunodeficiency?

Accepted Answer

AIDS

Question 3

A 7-year-old child develops a vesicular rash that starts on the trunk and spreads to the face and limbs. Years later, the same individual develops a painful, localized rash along a single dermatome. Which virus is responsible for both conditions?

Accepted Answer

Varicella-zoster virus

Question 4

Which viral disease is characterized by the sudden onset of high fever, severe muscle and joint pain, and a risk of hemorrhagic complications, and is transmitted by Aedes mosquitoes?

Accepted Answer

Dengue fever

Question 5

A college student develops fever, sore throat, and lymphadenopathy. Laboratory tests reveal atypical lymphocytes and a positive heterophile antibody test. Which virus is most likely responsible?

Accepted Answer

Epstein-Barr virus

Question 6

Which of the following viral diseases has been eradicated worldwide due to a successful vaccination campaign?

Accepted Answer

Smallpox

Question 7

A patient bitten by a bat develops hydrophobia, agitation, and eventually coma. Which viral disease is most likely responsible for these symptoms?

Accepted Answer

Rabies

Question 8

Which of the following viruses is most commonly associated with the development of cervical cancer?

Accepted Answer

Human papillomavirus (HPV)

Question 9

A 3-year-old child is hospitalized with severe lower respiratory tract infection during winter. Which virus is the most likely cause?

Accepted Answer

Respiratory syncytial virus (RSV)

Question 10

Which of the following viral diseases is transmitted primarily by fecal-oral route and is associated with outbreaks in areas with poor sanitation?

Accepted Answer

Hepatitis A

Question 11

A patient presents with a sudden onset of fever, headache, muscle aches, and a rapidly progressing hemorrhagic syndrome. Which viral disease is most likely responsible?

Accepted Answer

Ebola

Question 12

Which viral disease is characterized by a 'slapped cheek' rash in children and can cause severe anemia in patients with sickle cell disease?

Accepted Answer

None of the above (Parvovirus B19 is not listed)

Question 13

A patient develops a fever, cough, and a maculopapular rash that starts on the face and spreads downward. Koplik spots are observed in the mouth. Which viral disease is this?

Accepted Answer

Rubeola (Measles)

Question 14

Which of the following viruses is most likely to cause viral meningitis in the United States?

Accepted Answer

Enteroviruses

Question 15

A patient presents with a fever, severe headache, and confusion after being bitten by a mosquito in the Midwest United States. Which viral disease should be suspected?

Accepted Answer

LaCrosse encephalitis

Question 16

Which of the following is the most effective method for preventing the spread of influenza in a community?

Accepted Answer

Annual vaccination

Question 17

A patient develops a fever, jaundice, and bleeding after traveling to South America. Which viral disease, transmitted by mosquitoes, should be considered?

Accepted Answer

Yellow fever

Question 18

Which viral disease is most commonly associated with the development of cold sores (fever blisters) on the lips?

Accepted Answer

Herpes simplex virus type 1

Question 19

A patient presents with a dry cough, fever, and shortness of breath after cleaning out a rodent-infested barn. Which viral disease should be suspected?

Accepted Answer

Hantavirus pulmonary syndrome

Question 20

Which of the following viral diseases is most likely to cause parotid gland swelling and can lead to complications such as orchitis in males?

Accepted Answer

Mumps

Overview of Major Viral Diseases in Human Microbiology

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