Analysis Of Surveillance Results Of Infectious Diarrhoeal Patients In The Sentinel Hospitals From 2009 To 2015 In Jilin Province

Objective:The main objective of this study was to describe epidemiological characteristics,pathogenic spectrum and symptoms of infectious diarrheal patients using the surveillance data from the sentinel hospitals in Jilin province from 2009 to 2015,to provide scientific evidence for the formulation of prevention and control policies in Jilin.Methods:Patients diagnosed as infectious diarrhoea in the sentinel hospitals in Jilin province were included in the study.Face to face interveiw and laboratory test were used to collect basic information and pathogen spectrum data of patients.Descriptive analysis was conducted for the characteristics of pathogen spectrum in different time,age and region.SPSS 24.0 was used to perform the statistical analyses,and Chi-square test and Fisher’exact test were used for the distribution of categorical variables between different groups.The criterion for statistical significance was set at P <0.05.Results:1.Male accounted for 62.7% of 1292 infectious diarrhoeal cases.Patients under the age of five accounted for 60.1%.There were more cases from the central area of Jilin(55.4%)than other regions.The number of patients in urban areas was 721,more than 571 in rural patients.Disease incidence was mainly in summer(37.5%).Among all calendar months,the number of cases in August was the most(18.5%).Among all types of lag between disease onset and hospital visit,the number of patients went to the hospital in the second day after the onset was the most,which was 340.The symptoms of infectious diarrhea was mainly watery stool;1.4% had dehydration symptoms;24.7% had vomiting symptoms and 6.7% had fever with temperature of(38.43±0.59)℃.2.Both virus and bacteria were detected in 398 patients,there were 13 patients with multiple infection,and the proportion of multiple infection was 3.3%.Virus was detected in 1050 patients,there were 270 patients with virus infection,and the virus positive rate was 25.7%.The positive rate with group A rotavirus(18.2%)was the highest among all viruses,and the second highest was the human calicivirus(4.2%).Bacteria was detected in 895 patients,there were 85 patients with bacteria infection,and the bacteria positive rate was 9.5%.The proportion of patients with salmonella(4.7%)was the highest and the second highest was shigella,of which the positive rate was 2.0%.3.Viral diarrhea occurred mainly in winter with a positive rate of 52.3%.The highest positive rate of virus was 55.4%,which was in February.The highest positive rate of virus was in the central region(33.6%)of Jilin.The positive rate of virus in children under the age of 3 was different from that of bacteria.The highest positive rate of group A rotavirus was in winter compared with other seasons.The positive rate of group A rotavirus in rural patients(28.5%)was higher than that in urban patients(9.2%).The positive rate of human calicivirus in rural patients(2.5%)was lower than that in urban patients(5.6%).4.Bacterial diarrhea occurred mainly in summer,with a positive rate of 13.6%.The highest positive rates of shigella(4.6%)and vibrio(2.7%)were in the west region of Jilin.The positive rate of bacteria in urban patients(11.2%)was higher than that in rural patients(7.2%).Conclusions:1.Hospital visit mainly occurred in the period from August to October,and cases in the central region of Jilin were more than other regions.The number of cases under the age of five was more than other groups.2.The pathogens of virus diarrhea were mainly rotavirus and human calicivirus.The main pathogen of bacterial diarrhea was salmonella.3.The positive rate of virus was different at different seasons with the highest in winter.The positive rate of bacteria was the highest in summer.4.The positive rate of group A rotavirus in rural area was higher than that in urban area.The positive rate of group human calicivirus in rural area was lower than that in urban area.The positive rate of group bacteria in rural area was lower than that in urban area.5.The positive rate of virus in children younger than 3 years of age was higher than bacteria groups.