Question:
Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?
Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?
Updated On: Jun 17, 2022
- Microfilaria
- 1st stage larva
- 2nd stage larva
- 3rd stage larva
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Wucherena or filarial worm is a diagenetic parasite. Its primary host is human and Culex mosquito is the intermediate host. When a mosquito bites an infected person, microfilarial or first stage juvenile are picked up. Inside the mosquito muscles, microfilariae transform into infectious parasite or third stage juvenile which are deposited near the site of mosquito. When this mosquito bites a healthy person, third stage juvenile or infectious parasite penetrates through the punctured skin and reach the human lymphatic system.
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Concepts Used:
Human Health and Disease
Health is described as a state of complete physical, mental and social well-being.
The disease is a circumstance where malfunctioning of the body organs occurs leading to uneasiness and discomfort.
Differences between Infectious Diseases and Non-Infectious Diseases:
Common Diseases in Humans:
Read More: Human Health and Disease