Key Points

COVID-19

• In Week 23 (W23), viral circulation as measured by biological indicators is on the rise, confirming the trend that began in W22.

• The other indicators tracked as part of this surveillance are stable or on the rise, with the exception of critical care hospitalizations and in-hospital mortality from COVID-19 cases (excluding non-COVID-related deaths), which are still declining.

• Cases of infection with the BA.4 and, especially, BA.5 sublineages are rising rapidly in the Provence-Alpes-Côte d’Azur region and across France.

Extreme heat, heat wave

• Emergency departments: activity in emergency departments for conditions potentially related to heat is low.

• SOS Médecins: The proportion of consultations with SOS Médecins associations for diagnoses of “heatstroke and dehydration” is low.

Pollen

• The risk of allergies is high in the region, mainly due to grass pollen.

Chikungunya, dengue, Zika

• Since May 1, surveillance of chikungunya, dengue, and Zika cases has identified 5 imported cases of dengue in the region: 2 from Cuba, 1 from Costa Rica, 1 from Thailand, and 1 from Réunion.