Table 2.

Macro-categories and subcategories to not get vaccinated.

Macro-Category	Description	Sub-Categories
Risk Perception	Poor or distorted knowledge of personal or social risk related to flu assuming that there is no danger. This option is strengthened by a lack of interest in exploring the topic	Uselessness of vaccine: perception of unnecessariness about the opportunity of being vaccinated, with regard to one’s health
		Complacency: attitude oriented towards passivity, not questioning one’s choice, lack of values towards others’ protection and social responsibility
Distrust	Attitude to negative evaluation of facts, circumstances, and relationships generating a feeling of distrust in others as well as in their own possibilities and generally producing a lack of self-confidence and peace of mind	Distrust in safety: belief that vaccines can be associated to serious diseases, collateral and unknown long-term effects, and belief that risks are greater than benefits
		Distrust in effectiveness: belief that vaccination is an avoidable practice because it does not bring any benefits, even if it is not harmful
Values Dimension	Gaps in ideals or norms based on the awareness of the healthcare workers’ responsibilities, specifically on the norm of social protection (fragile and non-frail subjects), also achievable through personal protection. This can lead to opposition and criticism of the vaccine or partial perception of its individual and social usefulness.	Upset: very extreme position of refusal to get vaccinated
		Lacking professional responsibility: refers to scarce or limited awareness of the responsibility of getting vaccinated due to the kind of profession
Reasons related to one’s health	Attitude towards vaccination as derived from aspects related to physical inability to be vaccinated	-