Analysis of information sources in references of the Wikipedia article "Necator americanus" in English language version.
(N. americanus) is the native hookworm of Africa south of the Sahara and the only one found in parts of India. Ancylostoma and Necator occur together elsewhere in India, in much of China, in southeast Asia, in the islands of the South and Southwest Pacific, and in parts of Australia. ..., it is probable that the geographic boundaries between the two genera of human hookworms will disappear.