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JAMB Biology 1986 Question 44

Question 44

Microorganisms and Health

Which of these diseases CANNOT be prevented by immunization?

  1. A.Poliomyelitis
  2. B.Tuberculosis
  3. C.Cholera
  4. D.Onchocerciasis.
Show the answer and explanation

Answer: D (Onchocerciasis.)

Explanation

There are vaccines for polio, tuberculosis (BCG) and cholera, but none for onchocerciasis, which is controlled with drugs and by killing blackflies.