[Dengue at the beginning of the COVID-19 pandemic in Argentina].

Eleven years after the first dengue outbreak in Buenos Aires, on March 20, 2020, while the mandatory quarantine for COVID-19 began dengue became the most common cause of fever consultation. The new wave of dengue cases was already among the predictions of the Pan American Health Organization based on the increase in the region of the Americas that had been occurring since the previous year. The arrival of SARS-CoV-2 at the beginning of March, added to the dengue outbreak that was already underway, made a new challenge for the health system while a new paradigm was initiated with adaptation plans to the new pandemic infection in the country. The overlapping of infections with epidemic potential such as dengue recalls the importance of not neglecting other endemic, emerging and re-emerging diseases in the shadow of the new epidemiological phenomenon.