Study of Sarcocyst in Raw, Ready to Sell Hamburgers in Tehran

Sarcocyst is one of the obligatory heteroxenous protozoa which there is sporogony and gametogony stages of parasite in the intestine of final host and schizogony stage of parasite in the muscles of intermediate host. In this research 117 frozen raw hand made and industrial hamburgers which was ready to sell in Tehran، studied for detection of sarcocyst cysts contamination rate by Dab smear method. After defreezing، samples test for observation of macrocyst، then contacted to the surface of slid، fixed and stained with Giemsa staining method، and studied by light microscope. Results analyzed with SPSS. 11 software. There was macrocyst of parasite only in one hand made sample، and also there were microcyst of sarcocyst in 56 hamburgers. Statistical analysis didn’t show any significant difference between the contamination rate of hand made and industrial samples.