To assess the incidence and clinical-epidemiological characteristics of the pandemic A/H1N1 influenza in an urban health care. To compare the data with those of the Madrid Community.
Observational, descriptive, cross-sectional study. Follow-up period from April 2009 to April 2010. Main variables: age, gender, date episode recorded, location patient was seen, risk factors, complementary test requests, severity criteria and hospital referrals, complications, prescriptions of antiviral drugs and absence from work.
The total number of cases in the health care was 531 and the incidence was 1%. The mean age was 19.9 years (SD 卤 8.2 years) with 58.1%females. The highest number of cases (118) were detected in epidemiological week number 44 (from the 1st to the 7th of November 2009). Some known risk factor was recorded in 9.8%of the patients, the most frequent being chronic respiratory disease. At least 2.2%had some severity criteria, and 6.2%received pharmacological treatment. Absence from work was recorded in 63.9%of cases, with a mean of 8 days per case.
In general, there is agreement between the data from the urban health care centre and the Madrid Community on the epidemiology curve, age, gender and pathology.