Kajian Model SITR (Susceptible - Infected - Treatment - Recovered) pada Penyebaran Penyakit HIV/AIDS di Provinsi Sumatera Utara

Abstract

This study aims to examine and apply the SITR (Susceptible-Infected-Treatment-Recovered) model to the spead of HIV/AIDS in North Sumatra. This model is divided into 4 compartments, namely the population of individuals susceptible to HIV/AIDS infection, the population of HIV/AIDS infected individuals, the population of individuals taking antiretroviral therapy treatment, and the population of individuals with suppressed viral load. The type of data used is quantitative and secondary data. The data sources used are the Central Bureau of Statistics (BPS) and the North Sumatra Provincial Health Office in 2021-2024. The results showed that the success of antiretroviral therapy refers to the rate of individuals whose viral load is suppressed after treatment is greater than the rate of infected individuals receiving treatment. The value of the basic reproductive number is R_0<1 or R_0=0,2121 meaning that each infected individual will transmit the disease to 21% other individuals.