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Level 2 Travel Alert Issued for France's La Réunion Chikungunya Outbreak

In COVID-19, Latest News by Precision Vaccinations

While health agencies have issued travel alerts regarding France's Department of La Réunion Chikungunya outbreak for years, cases have spiked substantially since early 2025.
As of February 18, 2025, and since August 23, 2024, ARS Reunion confirmed 1,069 indigenous (local) cases recorded, including 927 since January 1, 2025.
The municipalities of Étang-Salé and Le Tampon have the most Chikungunya virus (CHIKV) cases, with 228 and 169 cases, respectively.

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Can Fractional Yellow Fever Vaccinations Decrease Deaths in the Americas

In COVID-19, Latest News by Precision Vaccinations

While the Yellow fever vaccine has been found highly effective when administered as a single dose, researchers have continued to examine the minimum dose requirements for seroconversion.
These researchers say the potential advantages of offering fractional doses are increased vaccinations and reduced under-vaccination, which have become a measurable health concern in the Region of the Americas over the past few years.
For example, 61 human cases of yellow fever were confirmed in the Region of the Americas in 2024, of which 30 were fatal (case fatality ratio, 50%).