Tens of thousands hit by norovirus winter vomiting bug

HPA officials work on the basis that for every one laboratory confirmed case,
there are an additional 288 unreported cases.


Although there have been more cases reported in the latest weekly figures,
they number of new reports is down 28 per cent on the previous week, when
there were [...]
Source:
http://www.ezonearticle.com/2012/12/12/tens-of-thousands-hit-by-norovirus-winter-vomiting-bug/