Key Points

In week 21 (May 24–30, 2021), all epidemiological indicators of SARS-CoV-2 circulation continued to decline in Île-de-France. However, these indicators remained at high levels compared to other regions and were still higher than national levels.

In Île-de-France, the regional incidence rate for Week 21 (adjusted for the effect of the Monday, May 24 holiday) continued to decline for the eighth consecutive week, while the adjusted testing rate remained relatively stable. Despite the decline in the incidence rate in Île-de-France, it remained the highest compared to other regions. The positivity rate also continued to decline.

The number of new hospitalizations of COVID-19 patients and new admissions to critical care units, as well as the number of deaths among hospitalized COVID-19 patients, continued to decline, reaching levels lower than those observed between the second and third waves of the epidemic. However, these hospital indicators remained the highest in mainland France and must be monitored with the utmost attention in the coming weeks.

Vaccination coverage in Île-de-France continued to increase. As of May 31, 2021 (data by date of injection), single-dose vaccination coverage stood at 36.9% and full-course vaccination coverage at 15.1%.

Although epidemiological indicators continued to decline in S21, confirming the slowdown in viral circulation, the latter remained higher in Île-de-France than in other regions. Thus, in the context of the lifting of collective restriction measures and incomplete vaccination coverage, it is essential to maintain a high level of adherence to individual prevention measures, testing, and isolation of cases and at-risk contacts. Adherence to these individual prevention measures and the rapid progress of vaccination remain essential to sustain the observed downward trend and preserve hospital capacity.