Norovirus is an extremely common bug, which is not normally dangerous.
Cardiff and Vale University Health Board has warned that "the effects can be more serious" for ill and vulnerable patients.
Many people will have the norovirus bug at this time of year – we see it every year and, for most people, it will be unpleasant but not serious.
But when norovirus spreads in hospitals, where patients are already unwell and are in close proximity to each other on wards, the effects can be more serious.
At this stage, we’re asking people to be sensible and to stay away from the hospital if they possibly can, to avoid spreading the bug.
It may be that you’ve had norovirus yourself and are feeling a bit better and think it’s safe to come in and visit. The reality is that there needs to have been at least 48 hours since your symptoms cleared before you can be confident that you’re not going to spread the bug to someone else.
We know that it’s difficult when people have friends and relatives in hospital. Over the coming weeks, we’re asking for the public’s help in helping us to limit the spread of norovirus so that we can protect vulnerable patients from the effects of this nasty bug by staying away from the hospital.
– Alice Casey, Chief Operating Officer, Cardiff and Vale University Health Board
Now with only a week to go before Christmas...no doubt the music world's already starting to wonder what song will top the charts this year. Hoping for airplay is a group of schoolchildren from Penarth and Barry.
The Rocketeers formed as a band 12 months ago and now they've released their very own Christmas track. Hannah Thomas went to meet them.
Seven men from Cardiff and the Vale of Glamorgan have been jailed after stealing more than five miles of high-voltage cable from pylons.
The gang isolated the circuits of five pylons to steal 45 tonnes of cable and causing £150,000 worth of damage and loss.
Gloucestershire Crown Court heard the gang were caught when two of them were stopped by police during routine checks in the area of Frampton on Severn, Gloucestershire, close to where the theft took place.
Brothers Vijay Chohan, 24, and Umar Chohan, 26, both from Grand Avenue, Cardiff, were jailed for two years after being found guilty of conspiring to steal the cable.
The other five men pleaded guilty to the same charge.
Liam Murphy, 24, of Penlan Road, Llandough, Penarth, Paul Condick, 30, of Llandow Road, Cardiff and Nathan James, 35, Heol Trelai, Ely, Cardiff, were all jailed for 21 months.
Stephen Phillips, 52, of Addicott Close, Cardiff and Martyn Richards, 27, of Heol Trelai, Ely, Cardiff were both jailed for 30 months.
Judge William Hart said the theft was "undoubtedly a very well planned and professionally executed offence."
Children from three schools in Penarth and Barry have recorded a new song in time for Christmas - and are aiming for the number one spot!
The group, who all have physical and learning difficulties,teamed up to write, perform and record the single 'It's Christmas Time' with the help of producer Gethin Jon, who has worked with a number of stars including Charlotte Church.
Ashgrove School, Ysgol Erw'r Delyn and Ysgol Maes Dyfan will host a major launch for the song this week as part of the school's Christmas concert.