Introduction: Influenza can be a life-threatening disease for high risk population. To ensure the safety of the patient's risk with regard to the prevention of infectious diseases, it is very important to vaccinate. The most effective protection against influenza is vaccination of general population as well as health care professionals. Vaccination prevents health care professionals from being infected with flu and to transfer pathogens to patients with whom they are in contact. Purpose: To determine how many of health care professionals in two primary health care facilities are vaccinated. Also, on what basis the health care professionals decide, whether to vaccinate or not and what are their opinions. We wanted to discover whether vaccination is more common among staff with higher education and determine whether there are links between the type of employment, period of working, availability of vaccines, gender and their decision to vaccinate. Methods: We used a descriptive method, in which we summarized the most important findings from already published facts by reviewing the scientific literature. Second part of the questionnaire included questions regarding the attitude of health care workers in relation to vaccination. We analyzed the answers through questionnaire, which was summarized by Abdi Osman and compared the answers of the employees in two different health institutions: a health center and a retirement home. Results: In 2015/16 73.06 % of respondents (health care professionals) decided not to vaccinate. The statement that the influenza vaccine is necessary, due to transmission of infections to a patient, was fully agreed with 30.8 % and agreed with 28.8 % of the respondents. The most common cause for not to be vaccinated are side effects (40.4 %). The most common side effect was redness at the vaccination site (36.3 %). As the results show, influenza immunity is still low in the health center in Ljubljana and in the retirement home. Doctors are the most vaccinated with 44.1 %, followed by graduate nurses / graduates with 23.4 %, while the incidence is the lowest with nursing assistance and nursing technicians (17 %). Discussion and conclusion: Vaccination is higher with more educated health care workers. Employees with shorter working period are more likely to be vaccinated than employees with longer working period. The vaccine availability is accessible to all, independent of the type of the employment. When deciding on vaccination, the most important factor for employees with short working period is the recommendation of the institution.