Univariate associations between intention to accept H5N1 vaccination and other variables at WHO alert phase 3 are shown in table 3. Male sex, working in a specialty other than internal medicine, being a doctor, having fewer years of work in the health services, having received seasonal influenza vaccination in 2008-9, and perceptions that they were likely to contract the influenza and that a pandemic would seriously affect their lives were all significantly associated with greater intention to accept vaccination. In multiple logistic regression models for intention to accept vaccination (table 4), all of these variables remained significant except for specialty, which became marginally significant. At WHO alert phase 5, only having received seasonal influenza vaccination in 2008-9 and younger age were found as significant associated factors for intention to accept H5N1 vaccination in multiple logistic regression (table 4) .