Posted: November 23rd, 2011 - 7:43pm
Source: BBC News

Health protection officials say a further case of E. coli O157 has been linked to an outbreak centred on a Bangor nursery.
A total of three cases are now associated with Tir na n-Og nursery.
A playgroup in Bethesda in Gwynedd has closed as a precaution after staff learnt that a child who also attended the Bangor nursery had been ill.
An outbreak control team has been set up involving Public Health Wales, the local NHS and councils.
Public Health Wales previously confirmed that a child and an adult linked to the Bangor nursery had been diagnosed with the illness.
Public Health Wales said parents are being kept fully informed and have been asked to collect samples from their children as soon as possible.
Nursery staff, and those in 'at-risk' groups who are close contacts of people who are unwell, will also be tested.
In October there was an outbreak of E. coli O157 linked to Tri Ceffyl Bach nursery in Amlwch, Anglesey. It was closed down indefinitely by its owners.
It is unclear if the two outbreaks are linked. Officials said previously that a possible connection was being investigated.