Epidemiological Situation

Since the beginning of 2018, 5,750 biologically confirmed or probable cases of dengue (including 3 imported from Polynesia, Brazil, and Thailand) have been reported by private and hospital laboratories in Réunion. The only serotype identified in 2018 among indigenous cases is DENV-2 (910 genotypes). This situation follows an unusual low-level viral circulation during 2017, when persistent transmission was observed during the southern winter.

In week S2018-25 (June 18–24):

• 259 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 (36 cases), St-Paul, Gare routière, and Etang (36 cases), Le Port (54 cases), La Possession (30 cases), St-Gilles-les-Bains (15 cases), St-Leu (21 cases), St-Gilles-les-Hauts (8 cases), Le Guillaume (7 cases), - In the south: Ravine des Cabris (9 cases), St-Pierre (3 cases), St Louis (14 cases), Etang Salé (4 cases), Le Tampon (3 cases), St Philippe (4 cases).- In the north: Sainte Clotilde (1 case), Saint Denis (1 case), and Sainte Marie (1 case).