To the editor: We read with interest the article by Huynh G et al[1]. We congratulate them for performing a cross-sectional survey among healthcare personnel (HCP) to understand their knowledge and attitudes towards the coronavirus disease 2019 (COVID-19) vaccine immediately before the vaccination. It is essential to consider HCP's attitudes about the vaccination because previous experiences with the influenza epidemic have shown a low acceptance and uptake of influenza vaccine among the general population and, more strikingly, among HCP, despite being a highly vulnerable subgroup[2].