This map shows the users who have filled in the survey in the last 7 days. You can zoom in to take a closer look at particular parts of the country. By clicking on the coloured blobs, you can find out how many people have reported symptoms from each postcode district. 

Participants whose symptoms are consistent with influenza are shown in red, those with respiratory symptoms (probably not flu - but see below) are shown in blue, and those without respiratory symptoms are shown in green.

Because users only record the first half of their postcode, the positions of points on the map do not indicate users' households.

Thealgorithm that we use to determine whether someone has flu-like-symptoms has been developed over some years by our collaborators in Holland, Belgium, Portugal and Italy. It correlates closely with physician-diagnosed seasonal flu (in technical terms it is quite specific to flu). It is possible that some people who recieve a "respiratory symptoms" diagnosis actually have swine flu (in technical terms, the sensitivity of the diagnosis may not be ideal). People with swine flu may display a different range of symptoms to those that have normal seasonal flu, which is what our diagnosis is based on. As we collect more data, then we may revise our definitions.

If you feel ill and are worried that you might have contracted swine flu, then you should stay at home and contact the health services: click here for health service contact details.