Summary What is already known about this topic?An outbreak of coronavirus disease 2019(COVID-19)of Omicron BA.2 emerged in Jilin City since March 3,2022,which involved in 27,036 cases by April 12.The vaccination progr...Summary What is already known about this topic?An outbreak of coronavirus disease 2019(COVID-19)of Omicron BA.2 emerged in Jilin City since March 3,2022,which involved in 27,036 cases by April 12.The vaccination program with inactivated COVID-19 vaccines has been implemented since the beginning of 2021.What is added by this report?The incidences of moderate,severe,and critical cases in the whole population of the group of 0+1 dose were 1.82-,9.49-,and 3.85-fold higher than those in the group of 2 doses,and 5.03-,44.47-,and∞-fold higher than those received 3 doses vaccination.For the population≥60 years,the incidences of moderate,severe,and critical cases in the group of 0+1 dose were 29.92,9.62,and 4.27 per 100,000,showing 4.13-,43.72-,and 4.85-fold higher than 2 doses,as well as 13.28-,22.37-,and∞-fold higher than 3 doses.What are the implications for public health practice?The incidences of each type of COVID-19 in the population who were fully vaccinated or booster vaccinated in Jilin City were significantly lower than those who were unvaccinated and/or partially vaccinated.Booster vaccination with homologous inactivated vaccines induces stronger protectiveness for COVID-19 caused by variant of concern(VOC)Omicron.展开更多
基金SKLID Development Grant(2021SKLID504,2019SKLID401,2019SKLID603).
文摘Summary What is already known about this topic?An outbreak of coronavirus disease 2019(COVID-19)of Omicron BA.2 emerged in Jilin City since March 3,2022,which involved in 27,036 cases by April 12.The vaccination program with inactivated COVID-19 vaccines has been implemented since the beginning of 2021.What is added by this report?The incidences of moderate,severe,and critical cases in the whole population of the group of 0+1 dose were 1.82-,9.49-,and 3.85-fold higher than those in the group of 2 doses,and 5.03-,44.47-,and∞-fold higher than those received 3 doses vaccination.For the population≥60 years,the incidences of moderate,severe,and critical cases in the group of 0+1 dose were 29.92,9.62,and 4.27 per 100,000,showing 4.13-,43.72-,and 4.85-fold higher than 2 doses,as well as 13.28-,22.37-,and∞-fold higher than 3 doses.What are the implications for public health practice?The incidences of each type of COVID-19 in the population who were fully vaccinated or booster vaccinated in Jilin City were significantly lower than those who were unvaccinated and/or partially vaccinated.Booster vaccination with homologous inactivated vaccines induces stronger protectiveness for COVID-19 caused by variant of concern(VOC)Omicron.
