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Objective@#To investigate epidemiological characteristics of notifiable infectious diseases in Zhejiang Province in 2023, so as to provide the evidence for strengthening prevention and control of infectious diseases.@*Methods@#Data pertaining to notifiable infectious diseases reported in Zhejiang Province in 2023 were retrieved from the Infectious Disease Surveillance System of Chinese Disease Prevention and Control Information System. The incidence and mortality were analyzed according to the classification of notifiable infectious diseases and transmission routes, and epidemiological characteristics of infectious diseases were descriptively analyzed.@*Results@#Thirty types of notifiable infectious diseases with 2 955 699 cases and 427 deaths were reported in Zhejiang Province in 2023, with a reported incidence rate of 4 493.93/105 and a reported mortality rate of 0.649 2/105. A total of 679 notifiable infectious disease emergencies were reported, with 26 514 cases and 1 case death (rabies). The emergencies mainly occurred in schools and preschool institutions, with 621 cases accounting for 91.46%. There were 1 case of cholera reported in class A notifiable infectious diseases and no death, 22 types of class B notifiable infectious diseases, with a reported incidence rate of 552.46/105 and a reported mortality rate of 0.644 7/105, and 8 types of class C notifiable infectious diseases, with a reported incidence rate of 3 941.48/105 and a reported mortality rate of 0.004 6/105. The incidence rates of respiratory, intestinal, blood-borne and sexually transmitted, natural and insect-borne infectious diseases were 4 028.67/105, 381.59/105, 81.15/105 and 1.35/105, respectively, according to transmission routes. Influenza (3 561.78/105) and COVID-19 (423.77/105) reported the highest incidence, and AIDS (0.477 4/105) and tuberculosis (0.130 8/105) reported the highest mortality.@*Conclusion@#The incidence rates of respiratory and intestinal infectious diseases were high in Zhejiang Province in 2023, and schools and preschool institutions were the main places of diseases occurred.
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Objective@#To investigate the characteristics of public health emergencies in Zhejiang Province in 2023, so as to provide the reference for public health risk management.@*Methods@#Data of public health emergencies and related information in Zhejiang Province from January 1 to December 31, 2023 was collected through Emergency Public Reporting System of Chinese Disease Prevention and Control Information System. Attack rates, disease types, distribution of time and places, and responses were descriptively analyzed.@*Results@#A total of 718 public health emergencies were reported in 2023 in Zhejiang Province, and all were infectious disease events. There were 27 128 reported cases and 3 deaths, with an attack rate of 3.22%. The top five infectious diseases with the highest number of reported events were influenza, norovirus infection, monkeypox, varicella and hand, foot and mouth disease, accounting for 95.54% of total reported events. There were 355 public health emergencies with less than 30 cases each, accounting for 49.44%. The reported emergencies peaked from February to March (186 events, 25.91%) and from November to December (327 events, 45.54%), and mainly occurred in schools and preschool institutions (651 events, 90.67%). The median responding time, reporting time and duration of emergencies were 6.50 (interquartile range, 10.84) h, 0.53 (interquartile range, 0.63) h and 7.24 (interquartile range, 11.71) d, respectively.@*Conclusion@#Public health emergencies in Zhejiang Province in 2023 were mainly caused by influenza and norovirus infection, with February, March, November and December being the peak reporting periods, and schools and preschool institutions being the main places where these events occurred.
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Objeetive@#To evaluate the imported risk of COVID-19 cases from aboard to Zhejiang Province,so as to provide reference for control strategies.@*Methods@#The epidemic data of COVID-19 in 9 foreign countries（US,UK,Italy,etc.）and Zhejiang Province were collected,as well as the number of entry persons. The imported risk values of COVID-19 cases to 90 counties（cities or districts）of Zhejiang Province and from the 9 countries during March 7th and 30th were calculated and normalized to the imported risk indexes. The imported risk indexes were classified into five levels from high to low according to percentiles. The imported risk of 90 counties（cities or districts）,the developing trend and the source were analyzed. @*Results @#A total of 39 confirmed cases and 24 asymptomatic cases were imported to Zhejiang Province untill March 30th. There were 10,13,22,21 and 24 counties（cities or districts）with high,medium high,medium,medium low and low imported risk,respectively. Qingtian had the highest imported risk（0.43）,followed by Ruian（0.32）and Wencheng（0.29）. The imported risks in 80（88.89%）counties（cities or districts）showed increased trend. The highest imported risk came from Italy（0.51）,followed by US（0.14）and Spain（0.11）. The imported risk in Wenzhou and Lishui mainly came from Italy and Spain,while that in the other areas mainly came from US,Germany and UK. @*Conclusions@#The risk of imported COVID-19 cases from aboard to Zhejiang Province showed an upward trend since March. The areas at high and medium high risk lay in southeast Zhejiang and the downtown of Hangzhou. The source of imported risk were maimly from Italy,US and Spain,but varied in counties.