Helminthic Parasites in Slaughtered Small Ruminants in Qazvin Province, Iran: Implications for One Health and the Food Industry.

Helminthic parasites are a significant concern for the food industry because of their detrimental effects on livestock health and food safety. This study aimed to provide data on the prevalence of helminthic parasites in 2250 slaughtered small ruminants in Qazvin Province, Iran. The overall infection rate was 56.6%, with sheep (64.9%) exhibiting a higher prevalence compared with goats (41.9%). Cystic echinococcosis (CE) was the most frequently detected parasite, followed by Moniezia expansa and Cysticercus tenuicollis. This study revealed higher susceptibility to infections in male animals and younger sheep, with infections occurring year-round, peaking in spring and summer. These findings highlight the need for targeted interventions, such as improved pasture management and deworming strategies, to mitigate economic losses and zoonotic risks. This research contributes significantly to livestock health and food safety efforts in Iran, advocating for integrated control measures within a One Health framework.