Knowledge about pandemic influenza preparedness among vulnerable migrants in Thailand

This study was designed to assess factors associated with a high level of knowledge about influenza among displaced persons and labor migrants in Thailand. We conducted a cross-sectional study of 797 documented and undocumented migrants thought to be vulnerable to influenza during the early stages of the 2009 H1N1 pandemic. Data were collected on socio-demographic factors, migration status, health information sources, barriers to accessing public healthcare services and influenza-related knowledge using a 201-item interviewer-assisted questionnaire. Among the different types of influenza, participants' awareness of avian influenza was greatest (81%), followed by H1N1 (78%), human influenza (61%) and pandemic influenza (35%). Logistic regression analyses identified 11 factors that significantly predicted a high level of knowledge about influenza. Six or more years of education completed [odds ratio (OR) 6.89 (95% confidence interval (CI) 3.58-13.24)] and recent participation in an influenza prevention activity [OR 5.27 (95% CI 2.78-9.98)] were the strongest predictors. Recommendations to aid public health efforts toward pandemic mitigation and prevention include increasing accessibility of education options for migrants and increasing frequency and accessibility of influenza prevention activities, such as community outreach and meetings. Future research should seek to identify which influenza prevention activities and education materials are most effective.