Natural Transmission of Entamoeba histolytica from Mother Cynomolgus Monkeys (Macaca fascicularis) to Their Newborn Infants under Indoor Rearing Conditions

Abstract

Natural transmission ofEntamoeba histolyticafrom infected mother Cynomolgus monkeys (Macaca fascicularis) to their newborn infants was investigated by the stool examination under indoor individually-caged conditions. Every infant became positive forE. histolyticabetween 5 and 10 weeks after birth. Although some infants were demonstrated to harbor the trophozoites, no overt amebic diarrhea occurred in any of the infants throughout the period of this study.