Background According to UNAIDS, an estimated 100,000 cases of new HIV infections were reported in Latin America in 2017. At the time, Antiretroviral Therapy (ART) was already being offered for these new cases, and was largely prescribed in the Primary Health Care (PHC) system. The objective of this study is to evaluate the epidemiological profile of new cases of HIV infection in a Porto Alegre City, with some of the worst HIV indicators in Latin America.

Methods A cross-sectional study, was carried out using a time series analysis, with data from Brazilian Information Systems. Data mining with WEKA software had been applied to evaluate the variables. The inclusion criteria were HIV diagnosis in the 2017 year, over 13 years who live in Porto Alegre City.

Results The incidence of HIV cases was 777 in Porto Alegre, in which the population is 1.500.000 inhabitants. There were 308(39.6%) women, 71(34.8%) blacks and mulattoes and 40(5.1%) were pregnant. Of these, 60(7.7%) presented viral load above 100,000 copies/mL and 267(34.3%) below 10,000 copies/mL. The number of people with CD4 count below 200 was 26(3.3%) and 455(58.5%) people had a time interval shorter than 3 months between the diagnosis and the beginning of ART. ARTs with Tenofovir/Lamivudine/Dolutegravir and Tenofovir/Lamivudine/Efavirenz were prescribed in 566(95%) of the 590 patients who started ART. Among the 777 cases, 521(67%) were diagnosed through the Rapid Test, which are offered primarily in PHC.

Conclusion The role of PHC was seen to be effective in reaching 90–90–90 Targets, since it has increased the diagnosis of HIV to immunocompetent individuals, facilitating easy access to first-line ART in short period of time. Future studies should be designed to investigate the role of PHC in the cascade of care for individuals with HIV. Information obtained from data mining can be applied to organize strategic interventions focused on local realities.

Disclosure No significant relationships.