To flu or not to flu?

This is apparantly a flu virus bug thingy - and it is easy to see why your nose and chest gets irritated by gazillions of these nasty things multiplying in your body. I had a flu jab in autumn, so I am guessing that my lurgy this Christmas has not been a proper flu, just a really bad coldy coughy sort of thing that makes you miserable. What women call 'man-flu' in their unkinder moments.

The flu carnage in Britain is the worst since 1999 apparantly, and the strain that is doing the damage is called Brisbane Flu this year. I understand that flu strains ar named after the city in which they are first identified.