Epidemiological Situation

Since the beginning of 2018, 6,345 biologically confirmed or probable cases of dengue (including 5 imported from Polynesia, Brazil, and Thailand) have been reported by private and hospital laboratories in Réunion. The only serotype identified in 2018 among locally acquired cases is DENV-2 (911 genotypes identified). This situation follows an unusual, low-level viral circulation during 2017, when persistent transmission was observed during the southern winter.

In week S2018-28 (July 9–15):

• 59 probable or confirmed cases of dengue were diagnosed through laboratory testing, based on the date of symptom onset.

• Confirmed and probable cases were mainly located: - In the west: Bois de Nèfles and La Plaine (8 cases), St-Paul, Gare routière, and Etang (6 cases), Le Port (12 cases), La Possession (11 cases), St-Gilles-les-Bains (2 cases), St-Leu (3 cases), La Saline (2 cases), Le Guillaume (1 case), - In the south: Ravine des Cabris (2 cases), Etang Salé (1 case), St-Louis (3 cases), Le Tampon (2 cases), and St-Joseph (1 case). - In the north: St-Denis city (2 cases).