Background. Malaria and HIV are two important public health issues. However, evidence on HIV-Plasmodium vivax co-infection (HIV/PvCo) is scarce, with most of the available information related to P. falciparum on the African continent. It is unclear whether HIV can change the clinical course of Plasmodium vivax (Pv) malaria, and increase the risk of complications. In this study, we present a systematic review of the HIV/PvCo, and include recent cases from the Brazilian Amazon. Methods. Medical records from a tertiary care center in the Western Brazilian Amazon (2009 - 2018) were reviewed to identify HIV/PvCo hospitalized patients. Demographic, clinical and laboratory characteristics and outcomes are reported. We also performed a systematic review of published studies on HIV/PvCo. Metadata, number of HIV/PvCo cases, demographic, clinical, and outcome data were extracted. Results. A total of 1048 vivax malaria patients were hospitalized in the 10-year period; 21 (2.0%) were HIV/PvCo cases, of which nine (42.9%) had AIDS-defining illnesses. This was the first malaria episode in eleven (52.4%) patients. Seven (33.3%) patients were unaware of their HIV status and were diagnosed on hospitalization. Severe malaria was diagnosed in 5 (23.8%) patients. One patient died. The systematic review search provided 17 articles (12 cross-sectional or longitudinal studies and 5 case report studies). A higher prevalence of studies involved cases in African and Asian countries (35.3% and 29.4%, respectively), and the prevalence of reported co-infections ranged from 0.1 to 60%. Conclusion. Reports of HIV/PvCo are scarce in the literature, with only a few studies describing clinical and laboratory outcomes. Systematic screening for both co-infections is not routinely performed, and therefore, the real prevalence of HIV/PvCo is unknown. This study showed a low prevalence of HIV/PvCo, despite the high prevalence of malaria and HIV locally. Even though relatively small, this is the largest case series to describe HIV/PvCo.