Key points

In mainland France:

• Most influenza indicators continue to rise in all metropolitan regions

• Predominance of the A(H3N2) virus over A(H1N1)pdm09

• Preliminary data on influenza vaccine efficacy suggest moderate to high efficacy against the A(H1N1)pdm09 virus and low efficacy against A(H3N2).

In the Overseas Territories:

• French Guiana: transition to the post-epidemic phase