Infectious Diseases MCQs
1. Which of the following pathogens is responsible for tuberculosis?
A) Mycobacterium leprae
B) Mycobacterium tuberculosis
C) Streptococcus pneumoniae
D) Staphylococcus aureus
Answer: B) Mycobacterium tuberculosis
2. What is the primary vector for the transmission of malaria?
A) Ticks
B) Fleas
C) Mosquitoes
D) Lice
Answer: C) Mosquitoes
3. Which antibiotic class is commonly used to treat methicillin-resistant Staphylococcus aureus (MRSA)?
A) Penicillins
B) Cephalosporins
C) Vancomycin
D) Macrolides
Answer: C) Vancomycin
4. What is the causative agent of Lyme disease?
A) Borrelia burgdorferi
B) Rickettsia rickettsii
C) Treponema pallidum
D) Chlamydia trachomatis
Answer: A) Borrelia burgdorferi
5. Which viral infection is known for causing a “bull’s-eye” rash?
A) Chickenpox
B) Lyme disease
C) Measles
D) Herpes simplex
Answer: B) Lyme disease
6. Which of the following diseases is caused by the human immunodeficiency virus (HIV)?
A) Tuberculosis
B) Acquired immunodeficiency syndrome (AIDS)
C) Hepatitis B
D) Syphilis
Answer: B) Acquired immunodeficiency syndrome (AIDS)
7. What is the primary mode of transmission for hepatitis B virus (HBV)?
A) Airborne droplets
B) Sexual contact
C) Contaminated food
D) Vector-borne transmission
Answer: B) Sexual contact
8. Which organism is known for causing a severe gastrointestinal illness characterized by watery diarrhea?
A) Escherichia coli (E. coli)
B) Salmonella enterica
C) Clostridium difficile
D) Vibrio cholerae
Answer: D) Vibrio cholerae
9. What is the standard treatment for bacterial meningitis caused by Neisseria meningitidis?
A) Antiviral medication
B) Oral antibiotics
C) Intravenous antibiotics
D) Antifungal medication
Answer: C) Intravenous antibiotics
10. Which of the following diseases is preventable by vaccination with the MMR vaccine?
A) Influenza
B) Measles
C) Tuberculosis
D) Hepatitis C
Answer: B) Measles