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目的掌握2011年龙岩市流感的流行趋势,为制定防治措施提供依据。方法由流感哨点医院及各县(市、区)疾控机构采集并送检流感样病例(ILI)咽拭样本,用实时荧光RT-PCR和MDCK细胞分离法进行检测。结果 2011年国家级哨点医院市第一医院门急诊病例就诊331 339人次,其中流感样病例17 347例(5.2%),5岁以下的婴幼儿占60.1%;各周ILI%2.4%～8.5%(平均5.2%)。全年均处于ILI%基线附近,高峰出现在29周,高于ILI%警戒线。全年共对887份咽拭标本进行流感病毒分离,阳性率3.7%;检测病毒核酸共845例,阳性率17.0%,24岁以下年龄段占65.3%。结论龙岩市流感活动有明显季节性,第1个流行高峰为2～5月,第2个高峰为10～12月,流感病毒流行株以2009年大流行H1N1型和乙型Victoria系为主。
Objective To grasp the epidemic trend of influenza in Longyan City in 2011 and provide the basis for making prevention and control measures. Methods Throat swab samples of influenza-like illness (ILI) were collected from sentinel hospitals and counties (municipalities and district) CDCs and detected by real-time fluorescence RT-PCR and MDCK cell isolation. Results A total of 331 339 outpatient and emergency department visits were found at the No. 1 Hospital of National Sentinel Hospital in 2011, of which 17 347 (5.2%) were influenza-like illness cases and 60.1% were infants younger than 5 years. ILI% was 2.4% -8.5 % (Average 5.2%). The year was at ILI% baseline near the peak at 29 weeks, above the warning level of ILI%. A total of 887 pharyngeal swab samples were collected for influenza virus isolation during the year, with a positive rate of 3.7%. A total of 845 viral nucleic acids were detected, with a positive rate of 17.0%. The age group under the age of 24 accounted for 65.3%. Conclusion The flu activity in Longyan City is obviously seasonal. The first peak is from May to May and the second peak is from October to December. The influenza virus strains are mainly H1N1 and Victoria B in 2009.