Key Points

Increased activity for influenza and influenza-like illness; transition to the pre-epidemic phase.

Week 50-2021 (December 13–19, 2021):

• SOS-Médecins: 489 consultations for flu-like illness recorded, representing 4.1% of total activity (compared to 2.9% in week 49)

• Oscour®: 79 emergency room visits for influenza or influenza-like illness, representing 0.30% of total activity (compared to 0.25% in week 49), of which 13% resulted in hospitalization. 66% of these visits involved children under 15 years of age

• Virology data:

  • Influenza A: 21 positive samples at Bordeaux University Hospital, 14 at Poitiers University Hospital, and 7 at Limoges University Hospital, representing a regional positivity rate of 7% (compared to 3% in week 49)

  • Influenza B: no positive samples at the Bordeaux, Limoges, and Poitiers University Hospitals

• Severe influenza cases: one severe case admitted to intensive care reported since the start of surveillance in week 40 of 2021 (no cases in week 50)

• Clustered cases of acute respiratory infection (ARI) in ESMS4: no episodes reported in week 50