Investigation of Yersinia pestis in Xenopsylla astia.

In this study, at the Department of Parasitology in the Pasteur Institute of Iran, Xenopsylla were allowed to feed on mice infected with Yersinia pestis. After 24-48 hours, they were killed by ether and kept in alcohol (70%) for 20 minutes. They were then examined for pathological signs and bacilli in different tissues and organs, longitudinally and cross-sectionally. The samples were studied using conjugated antibody and fluorescence microscopy. The results of this study revealed that the bacilli are abundant in the proventriculus after 6 hours, but it was found in other organs, rarely.