摘要
2012年2月10日至3月1日,萍乡市某小学发生一起乙型流感暴发疫情。98例流感样病例分布在23个班级,学校罹患率4.3%。其中二年级(4)班罹患率55%,二年级(2)班罹患率30%。100%病例出现发热,咳嗽发生率79%,咽痛发生率77%。经回顾性队列分析,学生流感疫苗接种率为18%,接种流感疫苗学生流感罹患率为17%,未接种流感疫苗的学生流感罹患率为49%,流感疫苗保护率为66%(95%CI:2.0%～88.0%)。良好的洗手习惯可在一定程度上降低患流感的风险。
An outbreak of influenza B occurred in a primary school in Pingxiang from February 2 to March 3,2012,involving 98 cases of influenza like illness（ILI） in 23 classes,the attack rate（AR） was 4.3%.The cases mainly occurred in class 2 and 4 of grade 2,the AR was 55% in class 4 and 30% in class 2.All the cases had fever,79% of the cases had cough and 77% had sore throat.Retrospective cohort study indicated that the influenza vaccination rate was only 18%,which was quite low;The AR was 17% among vaccinated students and 49% among unvaccinated students,the influenza vaccination protection rate was 66 %（95% CI： 2.0%-88.0%）.Students with hand washing habit were less likely to be infected.
出处
《疾病监测》
CAS
2012年第9期749-751,共3页
Disease Surveillance
关键词
乙型流感
暴发
回顾性队列研究
influenza B
outbreak
retrospective cohort study
