ABSTRACT
Objective By comparing and analyzing the etiological monitoring results of influenza in Xicheng District general hos-pital and children′s Hospital ,to explore the epidemic regularity of influenza in children ,so as to provide the basis for developing in-fluenza prevention and control measures .Methods A total of 40 swabs of influenza samples were collected every week from two sentinel hospitals ,and the virus RNA was extracted and detected by RT-PCR method .Results There was a statistically significant difference in positive rate of influenza pathogen surveillance between general hospitals and children′s hospitals (21 .8% vs .14 .9% ) (P<0 .001) .In the general hospital ,the positive rate was highest in people aged ≥60 years old(31 .3% ) .In the children′s hospital , the positive rate was highest in people aged >4—14 years old(26 .7% ) .Both hospitals had an epidemic peak of influenza from No-vember to December of next year ,it was typical influenza epidemic of the North area .But the children′s hospital had a epidemic trough in January and February .In both hospitals ,the circulating strains were H3 ,H1N1 ,type B ,the predominant type was H3 and type B .Conclusion Taking the general hospital as a reference ,the quality of influenza surveillance in the children′s hospital was relatively stable and reliable .Lack of the people aged >24— <60 years old and aged ≥60 years old in children′s hospital ,is the key reason of the statistically significant difference of the positive rate ,between the general hospital and the children′s hospital .Chil-dren′s influenza vaccination rate is higher than the other age group ,and the protective effect of vaccine is better .
ABSTRACT
Objective By comparing and analyzing the etiological monitoring results of influenza in Xicheng District general hos-pital and children′s Hospital ,to explore the epidemic regularity of influenza in children ,so as to provide the basis for developing in-fluenza prevention and control measures .Methods A total of 40 swabs of influenza samples were collected every week from two sentinel hospitals ,and the virus RNA was extracted and detected by RT-PCR method .Results There was a statistically significant difference in positive rate of influenza pathogen surveillance between general hospitals and children′s hospitals (21 .8% vs .14 .9% ) (P<0 .001) .In the general hospital ,the positive rate was highest in people aged ≥60 years old(31 .3% ) .In the children′s hospital , the positive rate was highest in people aged >4—14 years old(26 .7% ) .Both hospitals had an epidemic peak of influenza from No-vember to December of next year ,it was typical influenza epidemic of the North area .But the children′s hospital had a epidemic trough in January and February .In both hospitals ,the circulating strains were H3 ,H1N1 ,type B ,the predominant type was H3 and type B .Conclusion Taking the general hospital as a reference ,the quality of influenza surveillance in the children′s hospital was relatively stable and reliable .Lack of the people aged >24— <60 years old and aged ≥60 years old in children′s hospital ,is the key reason of the statistically significant difference of the positive rate ,between the general hospital and the children′s hospital .Chil-dren′s influenza vaccination rate is higher than the other age group ,and the protective effect of vaccine is better .
ABSTRACT
Objective To analyze the distribution and pulsed-field gel electrophoresis (PFGE)of pathogenic bacteria causing infectious diarrhea in a district of Beijing from 2011 to 2013,and provide basis for tracing infection sources.Methods A total of 1 179 stool specimens of infectious diarrhea from patients in a diarrhea outpatient department from January 2011 to December 2013 were collected,all isolated pathogens were identified by serotyping and PFGE analysis.Results 330 enteric pathogens were isolated from 1 179 specimens,the top 4 bacteria were Shi-gella spp .(28.18%,n=93),Salmonella spp .(20.91 %,n=69),Vibrio parahaemolyticus (13.33%,n =44),and diarrheagenic Escherichia coli (3.33%,n = 11 ).18 Shigella sonnei isolates were identified as 8 PFGE patterns, clustering similarity was close to 88%;69 Salmonella spp .strains belonged to 18 serotypes and 41 PFGE patterns, Salmonella senftenberg and Salmonella enteritidis had dominant patterns;no dominant PFGE patterns were obviously identified among 23 strains ofVibrio parahaemolyticus .Conclusion The serotypes and PFGE patterns of pathogenic bacteria in infectious diarrhea in past three years showed a wide distribution characteristics,the dominant PFGE patterns of Salmonella spp .and Shigella spp .need to be paid more attention,and outbreak of infectious diarrhea caused by Salmonella spp .and Shigella spp .should be alerted.