Rahman, Airiza, Lucia Yovita Hendrati, and Neva Chandra Suroto. 2024. “HEALTH PROBLEM ANALYSIS OF CLOSE CONTACT MANAGEMENT OF DIPHTHERIA DISEASE IN MADIUN CITY IN 2023”. HEARTY 12 (2):210-19. https://doi.org/10.32832/hearty.v12i2.16241.