Linguatula serrata, one of the parasitic zoonoses, inhabits the canine respiratory system as final host. In order to determine the prevalence rate of L. serrata nymphs in nodes of cattle, mesenteric and mediastinal lymph nodes of 300 cattle were collected from March to September of 2014 in Banab abattoir. The infection rate of L. serrata nymphs in mesenteric and mediastinal lymph nodes was 22.66% and 2% respectively. Prevalence of infection in male and female animals was reported 14.7% and 35.38%, respectively. There was not any significant difference in infection rate through the different seasons (spring and summer). Because, the most important parameter of Linguatula serrata is its zoonotic risk, so, regarding to existence of infection in cattle and the risk of transmitting to human, careful inspection of slaughterhouses and meat cooking before consumption can significantly help to prevent the spread of contamination.
