Department of infectious diseases, Institut de Veille Sanitaire (InVS) (French Institute for Public Health Surveillance), 12 rue de Val d'Osne, St Maurice Cedex, 94415, France.
BMC Public Health. 2012 Nov 5;12:947. doi: 10.1186/1471-2458-12-947.
Influenza surveillance systems do not allow the identification of the true burden of illness caused by influenza in the community because they are restricted to consulting cases. A study was conducted to estimate the incidence and the burden of self-defined influenza, and to describe healthcare seeking behavior for self-defined influenza during the A(H1N1)2009 pandemic in the French population.
We conducted a random-based retrospective cross-sectional telephone survey between May 2009 and April 2010 among a random sample of the French population.
For the 10 076 people included, 107 episodes of self-defined influenza were reported. The annual incidence of self-defined influenza was estimated at 13 942 cases per 100 000 inhabitants (CI95% 10 947 - 16 961), 62.1% (CI95% 50.5 - 72.5) of cases consulted a physician and 11.3% (CI95% 5.5 - 21.7) used a face mask. Following recommendations, 37.5% (CI95% 35.5 - 39.5) of people in the survey reported washing their hands more often during the pandemic season, and there was a positive association with being vaccinated against A(H1N1)2009 influenza, being a women, being a child (< 15 years) or living in a big city (≥ 100 000 inhabitants).
Self-defined influenza causes a significant burden of illness in the French population and is a frequent cause for consultation. These results allow a more accurate interpretation of influenza surveillance data and an opportunity to adapt future health education messages.
流感监测系统由于仅限于咨询病例，因此无法确定社区中流感实际造成的疾病负担。本研究旨在估计自我定义的流感发病率和疾病负担，并描述在 2009 年甲型 H1N1 流感大流行期间，法国人群中自我定义的流感寻求医疗服务的行为。
我们于 2009 年 5 月至 2010 年 4 月期间，对法国人群进行了一项基于随机抽样的回顾性横断面电话调查。
在纳入的 10076 人中，报告了 107 例自我定义的流感病例。自我定义的流感年发病率估计为每 100000 居民 13942 例（95%CI95% 10947-16961），62.1%（95%CI95% 50.5-72.5）的病例咨询了医生，11.3%（95%CI95% 5.5-21.7）使用了口罩。根据建议，调查人群中有 37.5%（95%CI95% 35.5-39.5）在大流行季节更频繁地洗手，且与接种 2009 年甲型 H1N1 流感疫苗、为女性、为儿童（<15 岁）或居住在大城市（≥100000 居民）呈正相关。
自我定义的流感给法国人群带来了相当大的疾病负担，也是经常导致咨询的原因。这些结果使我们能够更准确地解释流感监测数据，并为调整未来的健康教育信息提供了机会。
