Siliguri/Gangtok: Hundreds have fallen ill in North Bengal and Sikkim after coming into contact with Nairobi flies, a species native to East Africa. According to doctors, such flies do not bite, but if disturbed while sitting on someone's exposed body part they release a highly acidic substance called pederin which causes irritation leading to lesions and skin discolouration. They also said that the victims experience a tremendous burning sensation followed by excruciating pain, high fever and vomiting.
Several people have fallen ill after coming into contact with Nairobi flies in large swaths of North Bengal including Siliguri and Jalpaiguri. People from several areas including Ashrampara, Gurung Basti, Champasari, Debidanga, Matigara, Khaprail, Deshbandhupara of Siliguri Municipality have fallen ill because of the insect, officials said. Similar cases have been reported from Naxalbari, Kharibari and Phansidewa areas of North Bengal.