[Coinfection with two dengue serotypes during the 2024 outbreak].

Dengue is a viral infection that consists of four serotypes and is transmitted by a vector: the Aedes aegypti. mosquito, to humans. The infection can cause clinical presentations ranging from mild to severe. The first report of co-infection with two dengue serotypes in Moreno Municipality is presented. Six cases of DENV-1/DENV-2 co-infection were recorded at Moreno Hospital during epidemiological weeks 1-15 of 2024. During this period, a significant increase in reported dengue cases was observed compared to previous years. The co-infected cases did not show significant clinical differences compared to other patients who experienced the disease with a single serotype. This type of finding keeps us alert to the possibility of new co-infection cases, allowing for a more in-depth characterization of this identified group.