Analysis of Non-Compulsory Influenza and COVID-19 Vaccination among Polish Soldiers.

The COVID-19 pandemic posed many challenges in epidemiology, health care, and vaccinology. Pharmaceutical and biotechnology companies had to develop effective vaccines as soon as possible in order to halt the spread of infection outbreaks and enable the start of the National Vaccination Program. Firstly, medical services and security services (the army, fire brigade, and police), i.e., those most involved in the fight against the effects of the COVID-19 pandemic, were included in the aforementioned program. The presented publication analyzes the amount and type of vaccination against COVID-19 and influenza among Polish soldiers. Influenza, like COVID-19, is a viral disease that can vary in its course (from mild to acute and life-threatening). Both coronaviruses and influenza viruses are characterized by high genetic variability, resulting in the need for repeated vaccination during each autumn and winter season. Acquired data comes from the Central Register of Vaccination of Professional Soldiers. The collected material was statistically processed. The average level of the phenomenon was presented as a time series using a chronological average. In the analyzed period (December 2020-December 2021), the lowest vaccinations against COVID-19 were performed in December 2020, which is due to the schedule of the National Vaccination Program in Poland. In contrast, the highest number of vaccinations were administered between April and June 2021, or approximately 70.5% of all vaccines administered. In the case of influenza, there is a clear increase in the number of vaccinations during the autumn and winter seasons, which coincides with peaks in disease during these periods. Between August 2020 and January 2021, there is a noticeable increase in the number of flu injections given, nearly 50% compared to the previous period, which may be related to the simultaneous persistence of the COVID-19 pandemic and greater attention to one's own health. Non-mandatory vaccination is an important point in the vaccination schedule for soldiers. Numerous public campaigns combating misinformation and raising awareness of the need for immunization will help convince even more people, not only among soldiers but also the civilian population, to vaccinate.