The PLOS “Speaking of Medicine” blog highlights a number of new articles published in PLOS Neglected Tropical Diseases (NTDs) this week. In the first highlighted article, Martial Ndeffo Mbah of the Yale School of Public Health and colleagues present “a mathematical model of female genital schistosomiasis and HIV calibrated using epidemiological data from Zimbabwe that they’ve used to explore the potential cost-effectiveness of mass drug administration with praziquantel as an intervention strategy for reducing HIV transmission in sub-Saharan Africa.” In another article, Robert Gilman of the Johns Hopkins Bloomberg School of Public Health and colleagues “conducted a census, seroprevalence and epidemiologic study in a rural area of the Bolivian Chaco, known for high Chagas rates, and discovered that, after an insecticide spray program, transmission appeared to fall transiently, but then increased again quickly.” And in a third article, Richelle Charles of the Massachusetts General Hospital’s Division of Infectious Diseases and colleagues “identif[y] potential biomarkers unique to S. Typhi chronic carriers” (8/1).