Aprillia, S.M. and Peristiowati, Y. 2025. Case study of epidemiological investigation of Dengue Hemorrhagic Fever (DHF) in Blitar City . Science Midwifery. 13, 3 (Aug. 2025), 825–832. DOI:https://doi.org/10.35335/midwifery.v13i3.2005.