Onchocerca±Simulium complexes in Venezuela: can human onchocerciasis spread outside its present endemic areas?
The compatibility between sympatric and allopatric combinations of Onchocerca volvulus±anthropophilic species of Simulium was studied in the north-eastern focus of human onchocerciasis as well as in a densely populated locality of the Amazonas State in Venezuela. The objectives were to test the conjecture that local adaptation exists between the parasite and its vectors (the Onchocerca±Simulium complex hypothesis), and assess the possibility of the infection spreading from its present distrib...Expand abstract
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