Determinants of the willingness to get the third COVID-19 vaccine dose among health care workers

Christophe Paris (1, 2) , A Saade (1, 2) , E Tadié (3) , R Nguyen Van (4, 3) , V Turmel (3) , Ronan Garlantézec (1, 2) , P Tattevin (3, 4)

1 Irset - Institut de recherche en santé, environnement et travail
2 EHESP - École des Hautes Études en Santé Publique [EHESP]
3 Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Ponchaillou]
4 BRM - ARN régulateurs bactériens et médecine

OBJECTIVE: To characterize the willingness to get the third COVID-19 vaccine dose among health care workers (HCWs). METHODS: A cross-sectional study using a self-administered questionnaire proposed on a voluntary basis to all HCWs of a French teaching hospital in October and November 2021. RESULTS: Of 1,655 HCWs who completed the questionnaire, 64.2% were willing to receive the third dose, 20.1% were hesitant, and 15.7% were reluctant. On multivariate analysis, older age (p<0.0001), medical and executive staff, willingness to receive the flu vaccine (OR=5.72 [4.24-7.64]), previous vaccine scheme with ChAdOx1 nCoV-19 (AstraZeneca) (OR=2.13 [1.58-2.87]), and history of COVID-19 with a complete COVID-19 vaccine scheme (OR=2.77 [1.04-7.41]) were independent predictors of HCWs’ willingness to get the third dose. CONCLUSIONS: One third of HCWs were hesitant or opposed to a third COVID-19 vaccine dose. Better knowledge of determinants of the willingness to get this third dose may improve communication and vaccine strategy.

Mots clés: COVID-19; health care workers; influenza; vaccine; vaccine hesitancy

Domaines: Santé publique et épidémiologie; Virologie

Christophe Paris, A Saade, E Tadié, R Nguyen Van, V Turmel, et al.. Determinants of the willingness to get the third COVID-19 vaccine dose among health care workers. Infectious Diseases Now, 2022, 52 (4), pp.223-226. ⟨10.1016/j.idnow.2022.04.007⟩. ⟨hal-03690623⟩