Multiple choice

Which of the following diseases cannot be prevented with the help of vaccines?

  1. Whooping cough

  2. Diphtheria

  3. AIDS

  4. Tetanus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

AIDS is a viral disease caused by HIV. The human body cannot develop immunity against it. The antibodies that human immune system makes to fight HIV are not effective. HIV actually targets, invades and then destroys some of the most important cells in the immune system itself. So, no vaccine is effective in preventing AIDS.  

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