Epidemiological indicators show that the 2014–2015 flu season peaked during weeks 6 and 7 of 2015 in Brittany. The decline continued in week 15, and was particularly marked in hospital emergency departments, following two resurgences observed around weeks 11 and 14. Mortality across all age groups and among those aged 75 and older, as recorded by civil registry offices in week 14, fell back below expected levels. In week 15, the number of deaths from all causes across all age groups and among those aged 75 and older is below expected levels (these estimates should be interpreted with caution, as the data are not yet consolidated due to the usual delays in reporting).