Key Points

In Week 04 in Île-de-France, viral circulation remained very intense in the region. The public health situation appeared to be improving but remained dire.

• The crude incidence rate stood at 2,303 cases per 100,000 inhabitants and declined for the third consecutive week, though it remained very high amid a decrease in testing rates.

• The positivity rate decreased for the first time since late October 2021, yet remained very high at 27.2%.

• The Omicron variant (21K, B.1.1.529), which has been the dominant strain in Île-de-France since Week 51, continued to spread rapidly in the region.

• SI-VIC data showed a decline in new hospitalizations and new ICU admissions, as well as a decrease, for the first time in nine weeks, in COVID-19-related hospital deaths.

• Vaccination coverage with at least one dose stood at 75.8%, at 74.5% for the full course, and at 48.1% for the booster dose.

Given the high level of viral circulation, vaccinating all eligible individuals remains essential and must be combined with strict adherence to other preventive measures.