IMMUNOLOGY

Detailed explanation-1: -Lymphatic filariasis is transmitted by different types of mosquitoes for example by the Culex mosquito, widespread across urban and semi-urban areas, Anopheles, mainly found in rural areas, and Aedes, mainly in endemic islands in the Pacific.

Detailed explanation-2: -How is lymphatic filariasis spread? The disease spreads from person to person by mosquito bites. When a mosquito bites a person who has lymphatic filariasis, microscopic worms circulating in the person’s blood enter and infect the mosquito.

Detailed explanation-3: -The adult worms, which usually stay in one tissue, release early larval forms known as microfilariae into the person’s blood.

Detailed explanation-4: -Onchocerciasis, commonly known as river blindness, is a filarial disease caused by the parasitic nematode worm Onchocerca volvulus. People are infected by worms transmitted by the bite of blood-sucking blackflies, which breed in fast-flowing rivers.