Influenza Epidemiological Bulletin (DELR)

Each issue draws on the syndromic network, which collects influenza-like illness from sentinel facilities through the MESI platform, and on the smaller etiologic network, which tests respiratory specimens for influenza A and B, their subtypes and lineages, and other respiratory viruses.

A bulletin is a sheet of charts with a short text block: the cumulative case count for the year, the departments reporting most and their leading communes. Later issues set influenza positivity beside COVID positivity by week.

Sample counts and weekly positivity appear only as chart series; the A and B shares and the age and sex distribution are printed as labels.