Researchers using a driving simulator have found that people who drove whilst suffering from a heavy cold or flu (Swine or otherwise), took 10 per cent longer to react than a healthy driver.  This was equal to travelling an extra 2 metres at 60 mph before even starting to brake when presented with a hazard.

Additionally drivers suffering from flu were also less aware of potentially deadly hazards on the road if they were feeling ill.  Experts warn that the effects could be further compounded by many over-the-counter cold and flu remedies which can cause severe drowsiness, made even worse by the consumption of any alcohol.

Accordingly drivers who feel unwell should exercise extreme care when considering which if any medication to take.  Better still, don't drive at all until the illness has gone.