ABSTRACT
Objective To investigate the situation of flea species and distribution in the natural foci of plague in Baotou and provide a scientific basis for prevention and control of the disease.Method Flea specimens collected over the years and literature recordings were analyzed systematically.Results A total of 5 families,19 genera and 39 fleas were recorded,and 9 of them could be naturally infected with plague bacteria (Nosopsyllus laeviceps,Xenopsylla conformis,Neopsylla pleskei,Citellophilus tesquorum,Neopsylla bidentatiformis,Leptopsylla pavlovskii,Ophthalmopsylla praefecta,Rhadinopsylla insolita and Frontopsylla luculenta).There were 34 fleas in the north area,and 14 of them were regional fleas; there were 25 species in south area,and 5 were regional fleas.Conclusion Flea distribution in Baotou City has obvious regional characteristics,and these fleas can be naturally infected by the plague.
ABSTRACT
Objective To understand the epidemiological characteristics of human brucellosis in Baotou City of Inner Mongolia from 2008 to 2011.Methods Datas were collected from surveillance and investigation of human brucellosis in Baotou City during 2008-2011,and analyzed by descriptive study and statistics methods,including the main outcome measures:incidence,time distribution,endemic distribution,occupation distribution,age and sex distribution.Results About 2 338 cases were reported during the 4 years,the average annual incidence rate was 25.52/one hundred thousand,the annual incidence rate was in the range of 5.37/one hundred thousand to 38.65/one hundred thousand,and the incidence rate was rising year by year.The incidence mainly concentrated from April to August,and total reported cases were 1 423,accounting for 60.86％(1 423/2 338).Damaoqi and Guyangxian were regions with high prevalence rate of human brucellosis,and total reported cases were 1 652,accounting for 70.66％(1 652/2 338).The incidence of farmers was higher,accounting for 75.53％ (1 766/2 338).The 31-60 years old group had the highest incidence,accounting for 75.02％(1 754/2 338).The incidence of male was higher than that of female,male accounted for 75.19％ (1 758/2 338).Conclusions The infection of human brucellosis in Baotou City shows an increasing trend and widening scope.The incidence of human brucellosis has significant seasonal,regional,gender and age differences.
ABSTRACT
<p><b>OBJECTIVE</b>To document morphological changes in hepatic microcirculation in liver tissue with hepatitis B and the pathogenesis of hepatic microcirculatory disturbances.</p><p><b>METHODS</b>Liver tissue samples were obtained from patients with hepatitis B by liver biopsy. These samples were examined with a light microscope and transmission electron microscope.</p><p><b>RESULTS</b>Hepatic microcirculatory disturbances existed in patients with hepatitis B, including those with normal liver function, manifested by red blood cell aggregation in sinusoids seen under light microscope and sinusoidal capillarization seen under electron microscope. Weibel-Palade bodies in sinusoidal endothelial cells were seen in 26 out of 53 cases. Intimate contacts were found between lymphocyte/Kupffer cells and sinusoidal endothelial cells.</p><p><b>CONCLUSIONS</b>Hepatic microcirculatory disturbances exist in patients with hepatitis B. The appearance of Weibel-Palade bodies in sinusoidal endothelial cells may be a key step in the development of hepatic microcirculatory disturbances.</p>