Epidemiological Situation

Since the beginning of 2018, 6,431 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 indigenous cases is DENV-2 (911 genotypes analyzed). This situation follows an unusual, low-level viral circulation during 2017, when persistent transmission was observed during the southern winter.

In week S2018-31 (July 30 to August 5):

• 37 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 (3 cases), St-Paul, Gare routière, and Etang (9 cases), Le Port (3 cases), La Possession (5 cases), St-Gilles-les-Bains and St-Gilles-les-Hauts (1 case each), Les 3 Bassins (1 case) and St-Leu (1 case), - In the south: L'Etang Salé (2 cases), Les Avirons (1 case), St-Louis (3 cases), Le Tampon (1 case), and St-Pierre (4 cases),

• In St-Denis (1 case) and St-André (1 case)