VACCINATION CRISIS AS AN ENVIRONMENTAL THREAT TO PUBLIC HEALTH. AN ANALYSIS OF THE RESURGENCE OF DIPHTHERIA, PERTUSSIS AND MEASLES IN POLAND. IJITSS [Internet]. 2025 Sep. 30 [cited 2026 Mar. 17];4(3(47). Available from: https://rspublisher.org/index.php/ijitss/article/view/4103