CDC FluView · Influenza-like illness

Flu Activity Dashboard

The share of doctor visits for influenza-like illness, weekly since 1997. Each sharp winter spike is a flu season; the tallest is the 2009 H1N1 pandemic and the severe 2017-18 season.

Flu Activity Dashboard — PublicChartsU.S. influenza-like illness activity each week since 1997 — every winter flu season at a glance. Source: CDC FluView.Flu Activity DashboardThe share of doctor visits for influenza-like illness, weekly since 1997. Each sharp winter spike is a flu season; the tallest is the 2009 H1N1 pandemic and the severe 2017-18 season.