The Flusurvey is an online system for measuring influenza trends in the UK.
In contrast to traditional surveillance methods, the Flusurvey collects data directly from the general public, rather than via hospitals or GPs. This is particularly important because many people with flu don't visit a doctor so don't feature in traditional flu surveillance.
Each week, participants report any flu-like symptoms they have experienced since their last visit. If you have no symptoms, this only takes a few seconds. We provide participants with regular updates on the epidemic, all the latest news and advice about flu.
This year, for the first time, we are coordinating with similar surveys in 9 other European countries, letting us monitor flu as it spreads across the continent. You can find out more on the "Join in" tab.