Key Points

Since the start of this enhanced surveillance in Auvergne-Rhône-Alpes, only one indigenous dengue outbreak has been identified in 2019, underscoring the reality of this risk, which is growing year by year as the tiger mosquito continues its inexorable spread throughout the region’s municipalities.

The results of the 2021 epidemiological surveillance presented in this bulletin reflect the strict travel restrictions related to the COVID-19 pandemic, which significantly limited the number of imported cases, the majority of which involved travelers returning to mainland France from Réunion, which was affected by a dengue epidemic.