Trichinella s is considered as one of the most widespread food-borne zoonotic parasites globally. The disease it causes impacts human public health, swine livestock, and food safety. Unfortunately in the Philippines, there is still insufficient research on the presence of Trichinella among livestock. This study aims to update its status and records in the country, by verifying the presence of Trichinella s IgG antibodies from among the most active local swine livestock industry and link its potential presence to known animal husbandry and farm practices. For each selected slaughterhouse, blood samples were collected and serum samples were harvested from each pig sample. Sera were tested using ELISA for the detection of Trichinella s IgG antibodies. For serologically positive pigs, farm-based exposure assessment was conducted to evaluate potential routes of infection. For this study, a total of 555 blood sera, wherein three blood sera were detected to be serologically positive (low prevalence of 0.54% CI 0.11–1.57). Potential infection routes point towards outdoor housing management, pigs with unknown origin, pig farms presence with rodents, and pigs fed with waste as important risks. In summary, the present paper confirms that Trichinella s antibodies were detected in very low prevalence in the Philippines and demonstrated the potential utilization of antibody detection as an efficient and complementary early screening tool in Trichinella detection among pigs without immediately sacrificing livestock for the sake of testing. These results merit calls for a wider screening, testing, and isolation of Trichinella s in pigs from other Philippine provinces.

旋毛虫被认为是全球最普遍的食源性人畜共患寄生虫之一。它引起的疾病影响人类公共卫生、猪牲畜和食品安全。不幸的是，在菲律宾，关于家畜中存在旋毛虫的研究仍然不足。本研究旨在通过验证当地最活跃的养猪业中是否存在旋毛虫IgG 抗体并将其潜在存在与已知的畜牧业和农场实践联系起来，更新其在该国的状况和记录。对于每个选定的屠宰场，收集血液样本并从每个猪样本中采集血清样本。使用ELISA测试血清以检测旋毛虫s IgG 抗体。对于血清学阳性的猪，进行了以农场为基础的暴露评估，以评估潜在的感染途径。在本研究中，共有 555 份血清，其中 3 份血清被检测为血清学阳性（0.54% CI 0.11-1.57 的低流行率）。潜在的感染途径指向户外房屋管理、来源不明的猪、有啮齿动物的养猪场以及喂食废物的猪是重要风险。总之，本论文证实在菲律宾检测到旋毛虫抗体的流行率非常低，并证明了抗体检测作为旋毛虫有效和互补的早期筛查工具的潜在用途在猪中进行检测，而无需立即为了检测而牺牲牲畜。这些结果值得呼吁对来自菲律宾其他省份的猪进行更广泛的旋毛虫筛查、检测和分离。