Swine flu t-shirts

I'm sitting at home in London with a head cold. For the dew minutes it
took me to check my temperature (37 thank you very much) I was
wondering whether it might be the old swine flu, but no, just a normal
head cold.

Made me think, someone should make a t-shirt with a biometric sensor
that checks on true wearers' temperature. No fever and it would say
"don't worry it's only a cold". Fever and, well there are lots of
things it could say.