Key Points

• Dengue Outbreak: Resurgence of the Epidemic

• Clusters of cases in Saint-Louis, Saint-Paul, Saint-André, Etang-Salé, Entre-Deux, Trois-Bassins, Saint-Pierre, Sainte-Marie, La Possession, Saint-Benoît, and Saint-Leu. Isolated cases in 9 other municipalities.

• Unlike in 2019, in 2020, DENV1 was predominant, followed by DENV2; DENV-3 was mainly found in Saint-André

• Secondary dengue cases detected: possibility of an increase in the number of severe cases (CAT p.2)

• Imported cases in 2020 (travelers returning from Madagascar (DENV2), the Comoros, and Tahiti).