Dengue : le nombre de cas est en baisse

Dengue fever: the number of cases is declining

Since the beginning of the year, Reunion Island has been in an interepidemic situation. The number of cases recorded since January 2022 is still at a significantly lower level than last year (1,307 cases so far versus 16,758 cases in the same period in 2021).

Despite a slight increase in mid-April, the number of emergency visits remains stable overall. The number of hospital admissions remains lower compared to 2021.

As the southern winter approaches, the Reunionese are encouraged to maintain preventive measures:

  • Remove anything that might contain water in your home,
  • Protect yourself from mosquitoes (repellents, mosquito nets)
  • At the first symptoms, consult a doctor immediately.
Dengue fever situation in Réunion as of May 25, 2022
(Data from the France Public Health Unit in the regions, ARS)

Since January 1st

  • 1,307 confirmed cases
  • 126 emergency visits
  • 25 hospitalizations

The situation still corresponds to a period between epidemics. In the period under review, cases of dengue fever were reported in 17 communities:

  • South (62.6% of cases): Saint-Pierre, Saint-Joseph, Petite-Île, Le Tampon, Saint-Louis, Étang-Salé,
  • West (20% of cases): Saint-Paul, Saint-Leu, La Possession, Le Port, Trois-Bassins,
  • North 13% of cases): Saint-Denis, Sainte-Marie, Sainte-Suzanne,
  • East (4.4% of cases): Saint-Benoît, Saint-André, Bras-Panon

In addition, clusters of cases have been identified in the following districts:

  • Saint-Pierre: The Cabris Gorge – The White Gorge
  • Saint-Louis: The Vacoas slope – the Cocos
  • Etang-Salé: The Maniron

Dengue serotype 1 has been circulating on the island since 2021.

Recommendations for protection against mosquito bites and dengue fever

The health authorities recommend the population:

  • Protect yourself from mosquito bites, also in the 7 days after the onset of symptoms, to protect those around you > see section Recommendations against dengue fever
    Keep protecting yourself even if you’ve had dengue before; multiple dengue serotypes can circulate and infection with one serotype does not protect against attack by another serotype.
  • Eliminate and drain stagnant water that may contain mosquito breeding grounds: Anything that may contain water anywhere in your home, check the gutters…
  • In case of symptoms: fever, headache, muscle/joint pain, nausea, vomiting… consult a doctor and take the sample at the medical analysis laboratory prescribed by your doctor to confirm the dengue diagnosis.
  • If you have dengue fever:
    • Continue to protect yourself from mosquito bites to avoid spreading the disease to those around you and monitor your health status, especially between the 4th and 8th day of illness,
    • consult your doctor or emergency services if your health deteriorates.
Protect yourself from mosquitoes with repellents and mosquito nets
  • The use of repellents is one of the surest measures to contain the spread of dengue fever.

The use of bed or cot/stroller mosquito nets is an effective barrier to protect against mosquito bites, vectors of dengue fever.

It is especially recommended for people who are bedridden during the day and for newborns.

Mosquito nets can also be placed on windows and doors to increase indoor protection.

  • Using mosquito nets for beds, cribs or strollers provides an effective barrier to protect against mosquito bites.

It is especially recommended for people who are bedridden during the day and for newborns. Mosquito nets can also be placed on windows and doors to increase indoor protection.

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