What causes the infection of 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 kind of infection does wuchereria Bancrofti exhibit?
Wuchereria bancrofti is a filarial (arthropod-borne) nematode (roundworm) that is the major cause of lymphatic filariasis. It is one of the three parasitic worms, together with Brugia malayi and B. timori, that infect the lymphatic system to cause lymphatic filariasis.
How is filariasis transmitted to humans?
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.
Where do human wuchereria live?
EPIDEMIOLOGY: Wuchereria bancrofti is endemic in 78 countries and affects 128 million people worldwide(1). This nematode is widespread throughout humid and tropical zones of Asia, Africa, the Americas and the Pacific islands, and is common in areas with poor socioeconomic levels(1,2,7).
Which generation of microfilaria of wuchereria Bancrofti is infective for human?
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 life cycle stage of wuchereria infect human?
How does filariasis affect your body?
These asymptomatic infections still cause damage to the lymphatic system and the kidneys and alter the body’s immune system. When lymphatic filariasis develops into chronic conditions it leads to lymphoedema (tissue swelling) or elephantiasis (skin/tissue thickening) of limbs and hydrocele (scrotal swelling).
What is latent period for wuchereria Bancrofti in human being?
INCUBATION PERIOD: The incubation period is variable and often difficult to determine. Both microfilaria and adult worms have been observed in patients as early as 6 months and as late as 12 months after infection(4).
Which of the following life cycle stages of wuchereria Bancrofti is infective to man?
Bancrofti develop into first-stage larvae and then into third-stage infective larvae in the human body. The third-stage infective larvae can infect another human when the mosquito takes a blood meal.
Where do human Wuchereria live?
How many people are infected with Wuchereria bancrofti?
Wuchereria bancrofti is a common human parasite found in tropical regions worldwide. Approximately 106 million people in 76 countries are infected, with one billion people thought to be at risk for infection.
Where is w.bancrofti nematode found in the world?
This nematode is found in Central Africa and the Nile delta, South and Central America, and the tropical regions of Asia including southern China and the Pacific. The major factor limiting the geographic range of W. bancrofti is likely the climate requirement of its intermediate host, the mosquito.
What kind of pain does Bancroftian filariasis cause?
Wuchereria bancrofti is the cause of the human disease bancroftian filariasis which usually targets the genitalia and lower extremities. The disease is rarely fatal but can cause great pain to its victims. Furthermore, many of the effects of filariasis incapacitate the victim, reducing overall quality of living.