Siregar, P.A., Andini, Vinanda, F. , Rambe, Y.H. and Matondang, M.I.F. 2023. Understanding the Causes of Typhoid Fever or Typhus. Formosa Journal of Science and Technology . 2, 7 (Jul. 2023), 1723–1730. DOI:https://doi.org/10.55927/fjst.v2i7.4968.