Hospital staff are asking people who feel unwell to avoid visiting their relatives and friends, due to the highly contagious winter vomiting bug.
Norovirus is the most common cause of vomiting and diarrhoea and can be particularly dangerous for people with other medical conditions.
"Norovirus infection is particularly serious when it gets into environments where people live or work in close proximity, such as hospitals, residential care homes, hotels and schools.
"In hospitals, it inevitably leads to ward closures as measures are taken to contain the infection and stop it spreading. It can also lead to staff illness and of course it increases the risk to patients who have other serious illnesses.
“There are things that people can do to limit the impact so we are reminding people of the measures that may protect our healthcare services."
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A little damp first thing in the NW of the region on Sunday morning. Decent sun away from here and across the Isle of Man
Emma Jesson brings you Saturday night's forecast
A few showery patches of rain become confined to western coasts through the remainder of Saturday afternoon. Brighter elsewhere