Elimination of Rhodnius prolixus in El Salvador, Central America

epidemiological studies performed in el salvador between 1955-1972 demonstrated a high frequency of two triatomine vectors (triatoma dimidiata and rhodnius prolixus). however, the frequency of r. prolixus decreased by 1976 and this species has not been found since 1995. the main factors influencing the elimination of r. prolixus in el salvador are discussed in this paper.