What is the Infective stage of the following parasite? “MA BOWL”Mansonella (perstans, ozardi, streptocerca)Angiostrongylus cantonensis Brugia malayiOnchocerca volvulusWuchereria bancroftiLoa loa
3rd stage larva (filiform)
The infective stage for the following parasites are:
1. Mansonella perstans, Mansonella ozardi, and Mansonella streptocerca: The larvae of Mansonella species are transmitted to humans by the bite of infected black flies or midges. These larvae develop into adult worms in the human body, causing symptoms such as joint pain, itching, and rashes. The larvae are the infective stage.
2. Angiostrongylus cantonensis: This parasite, also known as the rat lungworm, is primarily found in rats and slugs/snails. Humans can become infected by ingesting raw or undercooked snails or produce contaminated with the larvae. The infective stage is the third-stage larvae.
3. Brugia malayi and Wuchereria bancrofti: These filarial worms are transmitted to humans through the bite of infected mosquitoes. The larvae called microfilariae, circulate in the blood and are the infective stage.
4. Onchocerca volvulus: Also known as river blindness, is transmitted to humans through the bite of infected black flies. The larvae (microfilariae) are the infective stage.
5. Loa loa: The larvae of Loa loa are transmitted to humans through the bite of infected deerflies or mango flies. The larvae enter a person’s bloodstream and grow into adult worms, which can cause symptoms such as itching, swelling, and pain. The infective stage is the third-stage larvae.
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