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Acceptance of pandemic influenza A (H1N1) 2009 vaccine among health care workers, Thailand

Introduction / objectives

To identify factors associated with the acceptance of the pandemic influenza A (H1N1) 2009 vaccine among health care workers (HCWs).


From March 1 to 31, 2009, a self-administered structured questionnaire survey was conducted among 700 HCWs to examine their knowledge, attitudes and practices toward the pandemic influenza vaccination.


The surveyed participants were composed of physician 8.5%, nurse 35%, and paramedic staff 56.5%. The response rate was 97.6%. Although 84% of the respondents regarded this vaccine as being beneficial, only 60.1% were willing to be vaccinated. The most common reason for refusal of vaccination was concern about the potential side effects of vaccine (29%). The most common source of vaccine information was broadcast media (67.8%), mainly TV and radio. Most respondents (72%) considered vaccination as the most important means for influenza control and prevention. Univariate analysis indicated that HCWs who regarded this vaccine as being safe and/or beneficial were 7 times more likely to agree to vaccinate compared to those who believed otherwise (RR: 7.08; 95% CI : 4.70-10.67). In contrast, those who had heard about vaccine adverse event from broadcast media were less likely to do so (RR: 0.77; 95% CI: 0.66-0.89). Furthermore, receiving vaccine safety information from health personnel was significantly associated with increased vaccine acceptance (RR: 2.07; 95% CI: 1.68-2.54).


Effective control and prevention of disease faces a major challenge posed by the nominal level of influenza vaccine acceptance among HCWs. In order to achieve an enhanced level of influenza vaccination acceptance, the provision of up-to-date and correct vaccine information to both HCWs and the mass media is of essentiality.

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This article is published under license to BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Chotpitayasunondh, C., Patrasuwan, S., Prontri, M. et al. Acceptance of pandemic influenza A (H1N1) 2009 vaccine among health care workers, Thailand. BMC Proc 5 (Suppl 6), P83 (2011).

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