ABSTRACT
Objective@#To analyze the plague monitoring results in Ulanqab City of Inner Mongolia in 2018, to master the changes in rat density and the prevalence of plague in rats, and provide a basis for scientific prevention and control of plague.@*Methods@#According to "The Plague Monitoring Scheme of Inner Mongolia", we surveyed Siziwang Banner, Chahar Right Back Banner, Huade County, and Shangdu County of Ulanqab City from April to November 2018 to monitor the plague. Rat density was surveyed using a one-day bow clamp method; small rodent was surveyed using a 5 m clamping method. Rodents were obtained by sample method, 5 m clamping method, daily method, collecting dead animals and the like, and fleas were picked up from the captured rats and rat nest. The rodents and fleas were carried out pathogen detection, the serum of rodents was tested by indirect hemagglutination test. Laboratory test results were analyzed based on the "Diagnostic Criteria for Plague" (WS 279-2008).@*Results@#Totally 1 463 mice were captured overlapping a monitored area of 416 hm2, the average rat density was 3.52 per hectare; the number of Meriones unguiculatus was 1 235, and the rat density was 2.97 per hectare. Totally 1 603 mice were grooming, 404 mice with fleas, the flea infected rate was 25.20%, the number of fleas were 1 348, and the flea index was 0.84. A total of 22 mouse nests were dug, 17 nests with fleas, the flea infected rate was 77.27%, the number of fleas were 131, and the flea index was 5.95. Totally 1 603 rodents were checked by etiology, the results showed that 7 plague rats were all Meriones unguiculatus. Totally 1 479 fleas of 581 groups were cultured, 14 fleas of 5 groups were detected, 3 fleas of 1 group in Siziwang Banner, and 11 fleas of 4 groups in Huade County. Totally 243 samples of murine animal serum were tested and the results were all negative.@*Conclusions@#The epidemic of plague in Ulanqab City is in an active state, so monitoring should be strengthened in this area to prevent the prevalence of human plague.
ABSTRACT
Objective To analyze the plague monitoring results in Ulanqab City of Inner Mongolia in 2018,to master the changes in rat density and the prevalence of plague in rats,and provide a basis for scientific prevention and control of plague.Methods According to "The Plague Monitoring Scheme of Inner Mongolia",we surveyed Siziwang Banner,Chahar Right Back Banner,Huade County,and Shangdu County of Ulanqab City from April to November 2018 to monitor the plague.Rat density was surveyed using a one-day bow clamp method;small rodent was surveyed using a 5 m clamping method.Rodents were obtained by sample method,5 m clamping method,daily method,collecting dead animals and the like,and fleas were picked up from the captured rats and rat nest.The rodents and fleas were carried out pathogen detection,the serum of rodents was tested by indirect hemagglutination test.Laboratory test results were analyzed based on the "Diagnostic Criteria for Plague" (WS 279-2008).Results Totally 1 463 mice were captured overlapping a monitored area of 416 hm2,the average rat density was 3.52 per hectare;the number of Meriones unguiculatus was 1 235,and the rat density was 2.97 per hectare.Totally 1 603 mice were grooming,404 mice with fleas,the flea infected rate was 25.20％,the number of fleas were 1 348,and the flea index was 0.84.A total of 22 mouse nests were dug,17 nests with fleas,the flea infected rate was 77.27％,the number of fleas were 131,and the flea index was 5.95.Totally 1 603 rodents were checked by etiology,the results showed that 7 plague rats were all Meriones unguiculatus.Totally 1 479 fleas of 581 groups were cultured,14 fleas of 5 groups were detected,3 fleas of 1 group in Siziwang Banner,and 1 1 fleas of 4 groups in Huade County.Totally 243 samples of murine animal serum were tested and the results were all negative.Conclusions The epidemic of plague in Ulanqab City is in an active state,so monitoring should be strengthened in this area to prevent the prevalence of human plague.
ABSTRACT
Objective To analyze the epidemic characteristics of human brucellosis in Baotou City,Inner Mongolia,and to provide a scientific basis for formulating prevention and control measures.Methods Based on the China Information System for Disease Control and Prevention monitoring date,human brucellosis related information in Baotou City from 2005 to 2016 were collected,and descriptive epidemiologicat method was used to analyze the distributions of time,area and population of the disease.Results In 2005-2016,a total of 5 069 new cases of brucellosis were reported in Baotou City.The annual average incidence rate was 16.01/100 000,ranging from 0.65/100 000 to 35.54/100 000,the lowest was in 2005 and the highest in 2011.From 2005 to 2011,the cases of brucellosis increased rapidly,from 15 cases in 2005 to 957 cases in 2011;it subsequendy showed a downward trend,and in 2016 it fell to 358 cases.Each month had new cases,the peak incidence was found from March to August,and the cumulative cases were 3 506,accounting for 69.17％ (3 506/5 069).The cases were mainly distributed in agricultural and pastoral areas,of which Damaoqi had the largest number of cases,with 2 136 cases,and the annual average incidence rate was 160.36/100 000.The cases in 25-64 years old group was the highest,accounting for 88.06％ (4 464/5 069).Farmers had the highest incidence,accounting for 77.14％ (3 910/5 069).Conclusion In recent years,the epidemic situation of human brucellosis in Baotou City has shown a downward trend,but it is still at a higher level,and the prevention and control situation is still grim.
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.
ABSTRACT
Objective To analysis the plague monitoring results on plague of rats in Lasiopodomys brandti plague natural foci of Xilin Gol Plateau in Inner Mongolia from 2001 to 2013,to master the dynamics of the plague epidemic,and to provide a basis for developing countermeasures.Methods Plague monitoring data from 2001 to 2013 in Lasiopodomys brandti plague natural foci were collected,main host density,rate of dye fleas,flea body index,bacteriology,serology and epidemic situation were studied.Results Within 13 years,10 153 Lasiopodomys brandti were captured overlapping a monitored area of 2 919.25 hm2,the average rat density was 3.48/hm2;other small rodents were captured 43 632 times,and 1 631 mice were captured,capture rate was 3.74％.Totally 22 752 host animals were checked by etiology,104 animals were infected with epidemic diseases,79 fleas of 31 groups positive fleas were checked from cultured 27 702 fleas of 6 437 groups.Totally 2 237 serum samples of Lasiopodomys brandti were checked using indirect hemagglutination (IHA),2 copies were found positive,the positive rate was 0.09％.Conclusion In Lasiopodomys brandti plague natural foci of Inner Mongolia,the plague bacteria infected host animals are still existed,future outbreak is possible;the monitoring and health education should be strengthened,in order to prevent the plague spreading to human being.
ABSTRACT
Objective To evaluating the effectiveness of comprehensive measures to control the plague in epidemic areas in Longlin county Guangxi from 2001 to 2010.Methods Original epidemic places was deratised,indicative animals were investigated,and epidemic clues were searched.Cage trapping method was used to capture rat and rat body fleas were collected in the plague epidemic areas.The flea-carrying rates and flea index of rodents were calculated based on the number of fleas collected from caged rodents.The animals were then subjected to etiological and serological tests to determine the plague infection rate.Results A total of 1008 rats were captured and 571 fleas were collected from 2001 to 2010,of which Rattus Flavipestus accounted tor 81.65％(823/1008) and Xenopsylla Cheopis for 64.10％(366/571).The annual average rodents infected with flea and the index of flea were 23.02％ (177/769) and 0.74,respectively.The annual average density of rodents decreased from 3.99％ (859/21 508,before deratised) to 0.96％ (149/15 600,after deratised).The deratization rate was 75.94％.Conclusion The risk of a plague epidemic in Longlin county is reduced after continued comprehensive measures be taken to deal with the disease.