The healthboard is urging the the city to avoid getting sick by practicing good hand hygiene to help avoid the spread.
Norovirus is a highly contagious stomach bug that causes diarrhoea, nausea, and vomiting.
It usually increases during the winter months.
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Beatrix Von Wissmann, NHSGGC Public Health Consultant said: “While viruses are a concern year-round, winter months see a spike in stomach virus cases when people spending more time indoors and in close proximity to one another.
“These viruses can be very nasty, particularly for those who are older or more vulnerable due to existing conditions.
“They also cannot be treated with an antibiotic and need to run their course, so it is important to be aware of how to avoid spreading the virus if you possibly can.
“We advise that you are also prepared to know what to do if you or loved ones do feel unwell.
“We recommend taking note of the online selfcare guides from NHS Inform or downloading the NHS24 app.
“Anyone, who believes they need to speak to a health professional, should call NHS24 on 111 for advice.
“It is better to wait to speak with someone in the comfort of your own home, particularly when vomiting and diarrhoea are involved.”
NHSGGC has listed how you can protect yourself and others from the virus.
Stay home if symptomatic with signs such as sudden nausea, vomiting, and diarrhoea, stay at home until at least 48 hours after your symptoms have stopped.
This helps prevent spreading the virus to others, especially vulnerable individuals in hospitals and care homes.
Practice good hygiene by washing your hands frequently and thoroughly with soap and water, particularly after using the toilet and before eating.
Hand sanitisers are not as effective against norovirus.
Do not visit hospitals or care homes if you or someone you live with has symptoms.
This is crucial to protect patients who are at higher risk of severe illness. This includes going to A&E.
If you need to speak to a health professional, call NHS24 on 111.
Regularly clean household surfaces, especially in the kitchen and bathroom, to reduce the risk of contamination.
Avoid cooking for others while symptomatic and ensure fruits and vegetables are rinsed well before eating.
If you catch norovirus stay hydrated by drinking plenty of fluids, such as water, to replace those lost through vomiting and diarrhoea.
Allow the virus to run its course, which typically lasts two to three days.
