Which of the following correctly matches the meningitis vaccine with the type or cause of meningitis it prevents?

• A. MenACWY → Neisseria meningitidis.
• B. MenB → Haemophilus influenzae type b.
• C. Pneumococcal conjugate → Haemophilus influenzae type b.
• D. Hib → Streptococcus pneumoniae

Answer: (A)

Verified step by step guidance

1. Step 1: Understand that meningitis vaccines are designed to protect against specific bacterial pathogens that cause meningitis, such as Neisseria meningitidis, Haemophilus influenzae type b, and Streptococcus pneumoniae.
2. Step 2: Identify the correct vaccine-pathogen pairs by reviewing the common targets of each vaccine: MenACWY targets Neisseria meningitidis serogroups A, C, W, and Y; MenB targets Neisseria meningitidis serogroup B; Hib vaccine targets Haemophilus influenzae type b; and pneumococcal conjugate vaccine targets Streptococcus pneumoniae.
3. Step 3: Compare each vaccine listed in the problem with its known target pathogen to check for correct matches. For example, verify that MenACWY is correctly matched with Neisseria meningitidis, and so on.
4. Step 4: Recognize that the problem's given matches are incorrect for MenB, pneumococcal conjugate, and Hib vaccines because they are paired with the wrong pathogens in the problem statement.
5. Step 5: Conclude that the only correct match from the options provided is MenACWY → Neisseria meningitidis, and understand why the other pairings are incorrect based on the specific pathogens each vaccine protects against.