A long-forgotten disease has returned to Poland. Based on NIZP-PZH data, from the beginning of 2024 to October 15, 20,677 cases of whooping cough were recorded. This is a worrying signal, because in 2023, the number of cases in the same period will only be 631 cases. The problem also occurred with measles – from the beginning of the year to the end of July this year. 246 cases were recorded, ten times more than in the same period in 2023 and almost 7 times more than in all of 2023, when there were only 36 confirmed cases of measles. Coupled with the season of increasing cases of influenza , RSV and coronavirus, it can be calculated that the autumn and winter period will be full of sick people and vacancies in the workplace.