Multiple choice

Which of the following microorganisms does not use antigenic variation as a major means of evading host defence?

  1. Influenza A virus

  2. Borrelia recurrentis

  3. HIV

  4. Trypanosome

  5. Streptococcus pneumoniae
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

There are at least 93 serotypes in the world. Though there are 23 prevalent serotypes that cause disease in different parts of the world, but no switching of the bacterium between serotypes is there. Infections with these organisms are common and often infect those with antibody, or innate or combined deficiencies.

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