A Study of Ascariasis Eradication by Repeated Mass Treatment

View More View Less
  • Unidad de Patologia, Escuela de Medicina, U. N. A. M., Hospital General, Mexico 7, D. F.


In a village of 529 inhabitants in southeastern Mexico, mass treatments using piperazine in a single-dose, repeated monthly, reduced the ascariasis rate from 28% at the first treatment to no detectable infection at the eighth. Mature worms capable of contributing infectivity to the soil were not seen in post-treatment stools after the sixth month. It is concluded that eradication of human ascariasis by repeated mass treatments can be achieved, at least in a closed population.