Epidemiological Situation

Since the beginning of 2018, 2,980 biologically confirmed or probable cases of dengue have been reported by private and hospital laboratories in Réunion.The only serotype identified in 2018 is DENV-2 (837 genotypes). This situation follows an unusual, low-level viral circulation during 2017, when persistent transmission was observed during the southern winter.

In week S2018-18 (April 30 to May 6):

• 388 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 (84 cases), St-Paul, Gare routière, and Etang (76 cases), Le Port (29 cases), La Possession (27 cases), St-Gilles-les-Bains (26 cases), St-Leu (18 cases), St-Gilles-les-Hauts (16 cases), La Saline (10 cases), Trois Bassins (3 cases), - In the south: Ravine des Cabris (16 cases), St-Pierre (12 cases), Etang Salé (8 cases), St Louis (6 cases), Le Tampon (5 cases), St Joseph (3 cases), and Avirons (3 cases) ,- In the north: Sainte Marie (5 cases), Sainte Clotilde (4 cases), Saint Denis (3 cases), and La Montagne (3 cases).

The number of confirmed and probable cases residing in the municipality of St. Denis has been increasing for several weeks.