Wuchereria bancrofti is a helminth/nematode
Disease / Pathology
Wuchereria bancrofti causes elephantiasis. The occurrence of microfilariae in the blood is nocturnal / sub-periodic in periodicity.
Location in the Host
Wuchereria bancrofti adult worms are present in the lymphatics while the microfilariae can be found in the blood or hydrocele fluid.
Wuchereria bancrofti is distributed throughout the tropics and sub-tropics worldwide but is especially prevalent in India, China, Indonesia.
Wuchereria bancrofti are transmitted by the mosquito. Specifically, Anopheles, Culex, and Aedes. The L3 larvae form found in the proboscis of the mosquito is the infective form.
Morphology & Diagnosis
Wuchereria bancrofti microfilariae are 244-296um in length. A sheath is present that is described as graceful and sweeping while the stain color it retains with Geimsa is that of blue/pale.
The cuclei do not extend to the tip of the tail. The tail tapers to a delicate point. The terminal nuclei elongate.
Wuchereria bancrofti photos by W. Vientos