Christmas parties are key culprits in spreading winter vomiting bug Norovirus

Christmas parties are key culprits in spreading the winter vomiting bug, which can be contagious for THREE WEEKS Norovirus expert Professor Ian Clarke says people can be infectious for THREE WEEKS after recoveringHe believes people hugging and kissing at parties is increasing the spreadSales of anti-bacterial hand gel have soared 52 per cent this weekAround 900,000 people now thought be affected By Daily Mail Reporter PUBLISHED: 14:28 GMT, 20 December 2012 | UPDATED: 18:54 GMT, 20 December 2012 Christmas parties are causing the winter vomiting bug to spread rapidly as sufferers are attending while still infectious, warns a norovirus expert.