Conclusions: The announcement of the H1N1 outbreak was associated with initial anxiety which decreased substantially over a two week time frame, and was found to be significantly associated with internet-based information-seeking behaviour. The analysis of web behaviour can provide a useful indicator of the level and changing pattern of public anxiety and informationseeking following an illness outbreak. Hepatitis C (HCV) is a blood borne virus: 75% of patients develop chronic infection (HCV+) and are at risk of cirrhosis, liver failure and cancer. While therapy can clear HCV in 50-80%, side effects may be debilitating. Disclosure of HCV+ status is at the discretion of the individual, but may be precipitated by the decision to seek treatment. The aim of this study was to determine whether patient characteristics were associated with patterns of disclosure in HCV+ people seeking treatment. Method: As part of routine care in a tertiary referral clinic, a database has been maintained which includes key demographic data and details of psychosocial assessments undertaken by a social worker. De-identified data was analysed from 2001 to 2008 inclusive.