Which area Bancrofti is carried by?
W. bancrofti is the most prevalent of the three and affects over 120 million people, primarily in Central Africa and the Nile delta, South and Central America, the tropical regions of Asia including southern China, and the Pacific islands….
| Wuchereria bancrofti | |
|---|---|
| Treatment | avermectin |
| Medication | ivermectin once annually |
Where is W Bancrofti found?
Wuchereria bancrofti is a filarial worm found in the lymph nodes of humans causing a lymphatic filariasis called Bancroft’s filariasis. Humans are the only known natural definitive host.
How is wuchereria Bancrofti transmitted?
MODE OF TRANSMISSION: The disease is usually transmitted through the bite of an infectious mosquito. Overall there are 6 genera and 70 species of mosquitoes responsible for the spread of Wuchereria bancrofti(1). INCUBATION PERIOD: The incubation period is variable and often difficult to determine.
Who is the carrier of filariasis?
Lymphatic filariasis is a vector-borne disease, being transmitted by mosquitoes (e.g. Culex, Anopheles and Aedes mosquitoes). Infected individuals may be asymptomatic, with no external sign of infection.
What is the infective stage of W bancrofti?
There the microfilariae develop into first-stage larvae and subsequently into third-stage infective larvae . The third-stage infective larvae migrate through the hemocoel to the mosquito’s prosbocis and can infect another human when the mosquito takes a blood meal .
What is the habitat of Wuchereria bancrofti?
Wuchereria bancrofti is largely confined to the tropical and sub-tropical regions of the world. According to the WHO reports, 73 countries are affected with the parasite. Some of these countries include India, West Indies, South America, West and Central Africa, Southern China, Japan, Pacific Islands and Korea (Fig.
How can filariasis be prevented?
Prevention & Control
- At night. Sleep in an air-conditioned room or. Sleep under a mosquito net.
- Between dusk and dawn. Wear long sleeves and trousers and. Use mosquito repellent on exposed skin.
What countries are affected by lymphatic filariasis?
Lymphatic filariasis remains endemic in 13 countries and areas in the Region: American Samoa, Brunei Darussalam, Fiji, French Polynesia, Kiribati, Lao People’s Democratic Republic, Malaysia, Federated States of Micronesia, New Caledonia, Papua New Guinea, Philippines, Samoa and Tuvalu.
What causes wuchereria Bancrofti?
Filariasis is an infectious tropical disease caused by any one of several thread-like parasitic round worms. The two species of worms most often associated with this disease are Wuchereria bancrofti and Brugia malayi. The larval form of the parasite transmits the disease to humans by the bite of a mosquito.
What is the scientific name of wuchereria Bancrofti?
Wuchereria bancrofti
Wuchereria bancrofti/Scientific names
Are there any natural hosts for Wuchereria bancrofti?
The mosquito vectors of W. bancrofti have a preference for human blood; humans are apparently the only animals naturally infected with W. bancrofti. No reservoir host is known, and the disease could, therefore, potentially be eradicated.
Where are Brugia malayi and Wuchereria bancrofti found?
Both Wuchereria bancrofti and Brugia malayi are found exclusively in tropical and subtropical areas. Brugia malayi is found in Southeast and East Asia, whereas W. bancrofti occurs in Asia, Africa, and Central and South America. However, infected patients could present in any part of the world, given the ease of travel.
What’s the difference between bancrofti and malayi worms?
W. bancrofti is distributed widely in the tropics, whereas B. malayi and B. timori are endemic in South East Asia and Indonesia. The adult worms develop in the lymphatics and range in length from 20 to 100 mm. Their microfilariae enter the general circulation via the thoracic duct.
How does a Wuchereria bancrofti worm become an adult?
The larvae develop into adult worms over the course of a year, and reach sexual maturity in the afferent lymphatic vessels. After mating, the adult female worm can produce thousands of microfilariae that migrate into the bloodstream. A mosquito vector can bite the infected human host, ingest the microfilariae, and thus repeat the lifecycle.
