Health Monitoring in the Provence-Alpes-Côte d'Azur Region. Bulletin of May 20, 2026.

Key Points 

Dengue, Chikungunya, and Zika

Since the start of enhanced surveillance (May 1), 18 imported cases have been identified in the region: 5 cases of chikungunya (+1 compared to last week) and 13 cases of dengue (+5).

West Nile virus infections

No locally acquired cases have been detected in the region, or more broadly in mainland France, since the start of enhanced surveillance (May 1).

Pollen and Allergies

Pollen exposure was at a moderate to high level, primarily due to grass pollen.
Allergy-related activity at SOS Médecins is trending upward, at a level typical for the season.

Mortality

No excess mortality observed.

In relation to

Chikungunya

thematic dossier

Chikungunya is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain.

Dengue

thematic dossier

Dengue fever is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain. Its complications can be severe.

Visuel illustratif

thematic dossier

Vector-borne diseases

Les maladies à transmission vectorielle sont des maladies infectieuses transmises par des vecteurs, essentiellement insectes et acariens hématophages. Santé publique France participe à leur...

Our latest news

news

10 years of commitment and action in the service of public health

news

Call for Applications for the Renewal of the Editorial Board of the Weekly...

news

Launch of the “Heating, Health, Buildings, and Urban Planning” Network:...