Domesticated animal reservoirs of in agricultural farms in Laguna and Quezon provinces, Philippines.

and G are recognized as significant etiological agents of diarrheal outbreaks in humans as these parasites may be transmitted through the ingestion of water and food contaminated with feces of human or animal origin. However, surveillance studies on the role of animal reservoirs in the transmission of and are deemed insufficient and the complete dimension of the problem contributing to contamination in an agricultural setting is unknown. This study aimed to assess the presence of and in domesticated animals from selected farms in the agricultural provinces of Laguna and Quezon in Southern Luzon, Philippines. Using immunofluorescence assay, an overall 85.7% incidence of protozoan infection was recorded among the animals ( = 161). Of these, 77.0 and 73.9% were positive for and respectively. Highest incidence (95.83%) of was documented in swine and the highest incidence (89.47%) of was observed in ruminants. Analyses revealed significant differences in the incidence of the protozoan parasites among animals with different containment status, water source, age group, and sex. On the other hand, farm workers' knowledge on parasite transmission was negatively correlated ( = 0.001) to parasite incidence. With the scarcity of data about and in farm-raised animals in the Philippines, the information obtained from this study will be vital for protozoan source tracking and further control interventions against and infections.