Dengue outbreak in Réunion: more than 6,300 confirmed cases in the north, west, and south of the island since January 1, 2018

A dengue outbreak is currently affecting western and southern Réunion. Following an unusual circulation of the virus during the 2017 southern hemisphere winter, the number of dengue cases has gradually increased since the beginning of 2018, with a spike in February. Santé publique France has released an update on the situation and is reminding the public of the preventive measures to take.

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The outbreak continues; ORSEC plan escalated to Level 4

On March 26, 2018, the Prefect of Réunion declared a "low-intensity epidemic" under the ORSEC system for combating arboviruses. The Indian Ocean Regional Response Unit monitors dengue epidemiology on the island of Réunion and publishes weekly data in an epidemiological bulletin. The current outbreak could continue to intensify in the coming weeks. Indeed, the population is not immune to dengue (only 3.1% of blood donors tested for dengue in 2008 had antibodies against the virus), and current weather conditions are conducive to the development of vectors.

Epidemiological situation as of July 31, 2018:

  • 6,345 biologically confirmed or probable cases reported since January 1, 2018

  • 59 biologically confirmed and probable cases in one week

  • Predominance of DENV-2 serotype

  • 134 cases hospitalized since the beginning of 2018

  • 18 severe dengue cases

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Learn more: Dengue epidemiological update for Réunion, July 31, 2018

Reminders of preventive measures everyone should take

  • Remove containers of water around your home and waste that can serve as breeding sites (empty saucers and small containers, follow the scheduled waste collection days…)

  • Protect yourself from mosquito bites (using diffusers, repellents, covering clothing, mosquito nets, etc.)

  • Consult your doctor if you develop symptoms of the disease and continue to protect yourself from mosquito bites.

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