Analysis on epidemiological characteristics of viral diarrhea in Weifang city,Shandong province from 2018 to 2022
Objective To analyze the pathogen spectrum and epidemiological characteristics of viral diarrhea in Weifang city,Shandong province from 2018 to 2022,so as to provide reference for the prevention and control of viral diarrhea.Methods Fecal specimens were collected from reported cases of infectious gastroenteritis in Weifang city during 2018 to 2022 for pathogen detection.The composition of pathogens and the epidemiological characteristics of positive viral cases were analyzed.Results A total of 39 707 cases of infectious gastroenteritis were reported,and 2 157 fecal specimens were collected,872 cases were positive,the positive rate was 40.4％(872/2 157).The positive rates of single virus from high to low were rotavirus(27.21％,587/2 157),norovirus(12.84％,278/2 157),enteric adenovirus(3.20％,69/2 157),astrovirus(2.87％,66/2 157),and sapovirus(0.88％,19/2 157).The positivity rate for mixed infections with 2 or more types of viruses was 5.00％(108/2 157).From 2018 to 2022,the annual positive detection rates showed signifi-cant differences(x2=23.081,P＜0.05),with rates of 36.3％(151/2 157),40.7％(207/2 157),43.9％(159/2 157),47.0％(231/2 157),and 32.7％(124/2 157)from 2018 to 2022,respectively.The virus positivity rate showed a steady in-crease from 2018 to 2021(x2=11.507,P=0.001).However,the positive rate declined in 2022.Conclusion Viral di-arrhoea is caused by a variety of viruses,predominantly rotavirus and norovirus,with some mixed infections in Weifang cit-y,Shandong province from 2018 to 2022.
Viral diarrheaEpidemiological characteristicsPathogen spectrumPositive ratePrevention and control strategy
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