Intention was a significant predictor of vaccination behaviour (OR = 15.50, 95% CI: 9.24–25.99). Intention PFI-2 to get vaccinated explained 58% of the variance in behaviour (Nagelkerke R2 = .58). Attitude and past vaccination frequency explained an additional 6% in behaviour (Nagelkerke R2 = .64). Of those that got vaccinated (N = 90), 43 (47.8%) indicated that they had gotten vaccinated at work and 47 (52.2%) indicated receiving vaccination from their general practitioner. The three items measuring vaccination experience showed

high internal consistency (α = .76) and were averaged into one construct. With an average score of 5.6 (SD = 1.3) on a 7-point scale, the vaccination experience can generally be described as positive. Reactions to

or side-effects from the vaccine were reported by 33 participants who got vaccinated. The most common reported occurrence were a minor local reaction at the site of injection (N = 27), followed by general malaise (N = 4), flu-like symptoms (N = 3), and having a cold (N = 2). Headaches and influenza were each indicated once. HCP who did not get vaccinated (N = 368; 80.4%) were asked to specify their reasons for non-immunization. A low risk-perception was indicated most often by HCP (N = 234, 49.6%), followed by organizational issues (N = 58, 12.3%), such as time constraints, not being offered the vaccination, or absence. The disbelief in the effectiveness of the vaccine in protecting oneself or others was reported 45 times SCH 900776 purchase and fear of side-effects or illness from the vaccine was reported by 43 participants. Misconceptions including the belief that the vaccine weakens the immune system and the belief that pregnant women should not get vaccinated were reported by 36 of the participants.

Some non-immunizers indicated feeling negative about getting something injected (N = 15). Few participants indicated medical reasons (N = 3), fear of needles (N = 1) Casein kinase 1 and the advice of their general practitioner to not get vaccinated (N = 1) as reasons for non-immunization. Two participants indicated that they were still planning to get vaccinated. This study shows that, relative to having no clear intention, different social cognitive variables predict high versus no intention to get vaccinated against influenza. In accordance with a previous study from our institute, the only factors shown to be indicative of both, having no intention and having a high intention to get vaccinated were attitude and past vaccination frequency. Attitude seems to be most influential for the prediction of intention and is also the strongest correlate of intention. Positive attitudes and previous vaccine receipt had been shown to be predictors of vaccination uptake in past research [18], [21] and [22].