I had the viral form 40 years ago. The onset was fast and frightening. One minute I was walking the boys back from the playground, the next I was feverish, vomiting and had the headache from hell as well as a painfully stiff neck. There were several similar cases among people I knew. It was clear that I was really ill when the doctor visited almost daily, though I wasn't hospitalised. It took a good month to get back to normal. However, the bacterial form of this disease is far more dangerous than the viral and I'm eternally grateful that I didn't have that. The five-year-old daughter of a friend died of meningococcal septicaemia.