Test detects co-infection by novel species of parasite in severe cases of visceral leishmaniasis

In recent years, physicians and scientists in parts of Brazil where visceral leishmaniasis (VL) is endemic have seen rising numbers of cases of co-infection by Leishmania infantum and Crithidia, also a protozoan but hitherto believed to be a mosquito parasite that cannot infect humans or other mammals. Accurate diagnosis is hindered by a lack of simple specific tests.