AIIMS 2018 Biology Parasitic Infections MCQ Question
How is Ascariasis transmitted?
By air
By mosquitoes
By contaminated food and water
By infected needles
Correct Answer
Detailed Explanation
Ascariasis is transmitted primarily through the ingestion of eggs of the Ascaris lumbricoides parasite, which are commonly found in contaminated food and water (H₂O). When these eggs are ingested, they hatch in the intestines, leading to infection. Option (A) is incorrect because Ascaris does not spread through the air; option (B) is incorrect as mosquitoes are not vectors for this parasite; and option (D) is irrelevant since infected needles are associated with bloodborne pathogens, not intestinal parasites like Ascaris. Understanding these transmission routes is crucial for preventing infection and promoting public health.
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