If no one is seeing a Dr or being swabbed how do they know its actually swine flu?

[MerlinsBeard]

Am intrigued as to how they can know as some of the symptoms are so similar to seasonal colds/flu/stomach bugs that we seem to get at this time of year anyway.

melmog had the same thing with my DC who is 18mth. Took her to GP's and she had tonsillitis although the symptoms seemed so similar.