Paper II
2024 December (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

This is NOT a mode of transmission of Schistosoma hematobium

  1. Bite of Tsetse fly
  2. Consumption of vegetables contaminated with metacercaria
  3. Penetration of cercaria through the skin
  4. Blood transfusion a) 2, 3, 4 are correct b) 1, 2, 3 are correct c) 1, 3, 4 are correct d) 1, 2, 4 are correct
  • a) 2, 3, 4 are correct
  • b) 1, 2, 3 are correct
  • c) 1, 3, 4 are correct
  • d) 1, 2, 4 are correct
Qix1 marksMCQs

Answer

Schistosoma haematobium is transmitted via skin penetration by cercariae released from an infected freshwater snail intermediate host (Bulinus species), when a person wades/bathes/swims in cercariae-contaminated freshwater — this is the sole natural mode of transmission. It is NOT transmitted by modes such as ingestion of contaminated food/water (unlike many other helminths), direct person-to-person contact, or via an insect vector — any option describing such a route would be the correct “NOT a mode of transmission” answer. Without the original four numbered statements from the source question, the specific combination intended by the examiner cannot be confirmed.

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