Among the respondents ( Table 1) , most of them were females who had worked an average of 8.8 years as a community nurse (ranging from 2 months to 32 years) and having been a registered nurse for 16.5 years (ranging from 1 year to 36 years). The mean age of respondents was 39.1 years and about a third (30%) had had the experience of dealing with SARS. One third of them had received vaccination for seasonal influenza in the past 12 months. Nurses from each geographical cluster in Hong Kong participated, with 11% of respondents working in Hong Kong Island, 47% working in Kowloon and 42% working in the New Territories (Hong Kong is geographically divided into Hong Kong Island, Kowloon peninsula and the New Territories).