03163nas a2200349   4500000000100000008004100001260005300042653001500095653001300110653002800123653001000151653001400161100001500175700001600190700001800206700001600224700001600240700001700256700001400273700001500287700001300302700001400315700001200329700001400341700001400355245013900369856007300508300000900581490000700590520220200597022001402799       2025                            d  c11/2025bSpringer Science and Business Media LLC10aOne Health10aZoonosis10aVeterinary parasitology10aRizal10aSan mateo1 aCuevas AJE1 aAguilar KKP1 aMonserrat EAH1 aPadayao JCB1 aServigon MM1 aTuringan AMA1 aDorado BB1 aIgnacio JM1 aLodor PF1 aOsete ANR1 aRamo AF1 aBamba LMD1 aLabana RV00aOne health investigation of enteric parasites at the human–animal–soil interface in a marginalized peri-urban Philippine community  uhttps://link.springer.com/content/pdf/10.1186/s12982-025-01186-1.pdf  a1-170 v223 a<p>Enteric parasites remain a significant public health concern in marginalized communities where humans, domestic animals, and the environment interact closely. This study investigated the distribution of intestinal parasites across humans, animals, and soil in Sitio Ibayo, San Mateo, Rizal, a peri-urban Philippine community with limited sanitation and veterinary services. A cross-sectional survey was conducted using stratified purposive sampling. Fresh fecal samples were collected from companion animals (dogs, cats), livestock (chickens), ruminants (water buffalo, cows, goats), and consenting human residents with regular animal contact. High-risk soil from residential yards, playgrounds, and open ranges was also sampled. Parasites were detected using direct smear, Kato-Katz, flotation (mini- and fill-FLOTAC), and sucrose flotation for soil, with morphological identification confirmed by inter-rater agreement. A diverse assemblage of helminths and protozoa was detected across domains. Dogs showed a high prevalence of&nbsp;<em>Ancylostoma</em>&nbsp;spp. (63.9%) and&nbsp;<em>Trichuris</em>&nbsp;spp. (33.8%), while ruminants were predominantly infected with&nbsp;<em>Eimeria</em>&nbsp;spp. (≥ 77%). Among humans (<em>n</em> = 41),&nbsp;<em>Ascaris</em>&nbsp;spp. was most prevalent (56%), especially in children (70%). Soil samples (<em>n</em> = 28) harbored&nbsp;<em>Ascaris</em>&nbsp;spp. (21.4%), hookworm (7.1%), and&nbsp;<em>Toxocara</em>&nbsp;spp. (3.6%). A chord diagram revealed&nbsp;<em>Ascaris</em>&nbsp;spp. as the key “One Health bridge parasite,” occurring across humans, animals, and soil. The detection of shared parasite taxa across domains demonstrates ongoing environmental contamination and exposure risks in Sitio Ibayo.&nbsp;<em>Ascaris</em>&nbsp;spp. plays a central role in sustaining transmission at the human–animal–soil interface. These findings highlight the need for integrated One Health strategies, combining targeted deworming in humans and animals, sanitation improvements, and environmental management, and support the development of Sitio Ibayo as a sentinel site for parasite surveillance in similar peri-urban settings.</p>
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