Analysis of a monitoring results on animal plague in Meriones unguiculatus plague natural foci in Inner Mongolia from 2010 to 2014 / 中华地方病学杂志

ABSTRACT

Objective To analyze the monitoring results on plague in Meriones unguiculatus plague natural foci in Inner Mongolia from 2010 to 2014,to master the epidemic dynamics of the plague and to provide a basis for developing countermeasures.Methods The plague monitoring data in Meriones unguiculatus plague natural foci from 2010 to 2014 were collected;main host density,rate of dye fleas,flea body index and bacteriology were counted;serology detection was done and the epidemic situation was analyzed.Isolation and identification of Yersinia pestis were carried out through a 4-step test (microscopic examination,isolation and culture,phage lysis test and animal experiment).Serum samples were tested by indirect hemagglutination test.Results Within 5 years,21689 Meriones unguiculatus were captured overlap monitored areas of 7116 hm2 totally,the average rat density was 3.05/hm2;other small rodents were clipped 144352 times,3947 mice were captured,capture rate was 2.73％.Totally 26500 Meriones unguiculatus were checked,91 Meriones unguiculatus were infected with epidemic diseases,227 of 59 groups positive fleas were checked from cultured 51262 fleas of 13268 groups.Totally 5426 serum samples of Meriones unguiculatus were checked,5 copies were found positive,the positive rate was 0.09％.Conclusions Inner Mongolia Meriones unguiculatus plague is still active and spreading.We must enhance propaganda of the plague.Surveillance and emergency management should be strengthened to prevent a outbreak of the plague in human being.