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MCQs on Infection and Disease
- Which of the following is the causative agent of tuberculosis?
- A) Streptococcus pneumoniae
- B) Mycobacterium tuberculosis
- C) Mycobacterium leprae
- D) Bacillus anthracis
Answer: B) Mycobacterium tuberculosis
- Which antibiotic is commonly used to treat infections caused by Staphylococcus aureus, including MRSA?
- A) Penicillin
- B) Vancomycin
- C) Erythromycin
- D) Ciprofloxacin
Answer: B) Vancomycin
- Which of the following is the most common cause of bacterial meningitis in adults?
- A) Neisseria meningitidis
- B) Streptococcus pneumoniae
- C) Haemophilus influenzae
- D) Listeria monocytogenes
Answer: B) Streptococcus pneumoniae
- What is the primary mode of transmission for hepatitis B virus (HBV)?
- A) Airborne droplets
- B) Fecal-oral route
- C) Blood and body fluids
- D) Direct contact with skin lesions
Answer: C) Blood and body fluids
- Which of the following is a hallmark symptom of bacterial vaginosis?
- A) Painful urination
- B) Fishy odor
- C) Vaginal bleeding
- D) Itching
Answer: B) Fishy odor
- Which virus is primarily responsible for causing chickenpox (varicella)?
- A) Herpes simplex virus
- B) Epstein-Barr virus
- C) Varicella-zoster virus
- D) Cytomegalovirus
Answer: C) Varicella-zoster virus
- Which pathogen is associated with causing peptic ulcers?
- A) Escherichia coli
- B) Helicobacter pylori
- C) Salmonella enterica
- D) Campylobacter jejuni
Answer: B) Helicobacter pylori
- The “slapped cheek” appearance is characteristic of which viral infection?
- A) Measles
- B) Rubella
- C) Parvovirus B19
- D) Chickenpox
Answer: C) Parvovirus B19
- Which type of influenza virus is most commonly associated with pandemics?
- A) Influenza A
- B) Influenza B
- C) Influenza C
- D) Influenza D
Answer: A) Influenza A
- Which infection is commonly associated with a high-risk group of individuals who are immunocompromised, such as those with HIV/AIDS?
- A) Herpes simplex virus
- B) Human papillomavirus
- C) Cytomegalovirus
- D) Varicella-zoster virus
Answer: C) Cytomegalovirus
- Which of the following is a common complication of untreated streptococcal throat infection?
- A) Rheumatic fever
- B) Shigellosis
- C) Tuberculosis
- D) Pertussis
Answer: A) Rheumatic fever
- Which of the following is a key diagnostic test for confirming a diagnosis of HIV infection?
- A) Complete blood count (CBC)
- B) ELISA (Enzyme-Linked Immunosorbent Assay)
- C) Chest X-ray
- D) Urinalysis
Answer: B) ELISA (Enzyme-Linked Immunosorbent Assay)
- Which disease is characterized by the presence of “currant jelly” sputum?
- A) Tuberculosis
- B) Pneumonia
- C) Klebsiella pneumonia
- D) Chronic bronchitis
Answer: C) Klebsiella pneumonia
- Which pathogen is commonly responsible for causing opportunistic infections in patients with AIDS?
- A) Staphylococcus aureus
- B) Candida albicans
- C) Mycobacterium leprae
- D) Neisseria gonorrhoeae
Answer: B) Candida albicans
- Which of the following vaccines is used to prevent whooping cough?
- A) DTP (Diphtheria, Tetanus, Pertussis) vaccine
- B) MMR (Measles, Mumps, Rubella) vaccine
- C) IPV (Inactivated Poliovirus Vaccine)
- D) Hib (Haemophilus influenzae type b) vaccine
Answer: A) DTP (Diphtheria, Tetanus, Pertussis) vaccine
- What is the most common mode of transmission for norovirus infection?
- A) Airborne droplets
- B) Fecal-oral route
- C) Bloodborne transmission
- D) Vector-borne transmission
Answer: B) Fecal-oral route
- Which of the following is an effective preventive measure against the spread of tuberculosis?
- A) Hand hygiene
- B) Vaccination with BCG
- C) Use of antiviral drugs
- D) Isolation of infected individuals
Answer: B) Vaccination with BCG
- Which bacteria is responsible for causing the sexually transmitted infection known as gonorrhea?
- A) Treponema pallidum
- B) Chlamydia trachomatis
- C) Neisseria gonorrhoeae
- D) Mycoplasma genitalium
Answer: C) Neisseria gonorrhoeae
- Which infection is often associated with the development of Kaposi’s sarcoma in AIDS patients?
- A) Epstein-Barr virus (EBV)
- B) Human Herpesvirus 8 (HHV-8)
- C) Cytomegalovirus (CMV)
- D) Human Papillomavirus (HPV)
Answer: B) Human Herpesvirus 8 (HHV-8)
- Which of the following is a primary preventive measure for preventing influenza?
- A) Antibiotic therapy
- B) Antiviral medications
- C) Annual influenza vaccination
- D) Surgical intervention
Answer: C) Annual influenza vaccination
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