Several care homes in Northern Ireland have advised families not to visit loved ones as they attempt to protect residents from the current outbreak of the flu virus.

While this is normal procedure to control infection, it is understood there is growing concern about the rise in cases, especially among staff.

Almost 80% of care home residents have been vaccinated but it is understood there has not been the same take up among the workforce.

BBC News NI understands that at this stage the number of homes affected is not being regarded as a major issue but it is an indication of the impact the virus is having in caring for vulnerable men and women.

The Public Health Agency (PHA) has appealed for everyone who is eligible for a vaccine to get one.

Dr Joanne McClean, its director, said the vaccine was the best defence against seasonal flu.

“We must not underestimate the seriousness of seasonal flu.

“It can result in hospitalisation, even for some otherwise healthy people. We have enough stock of vaccine for eligible people to avail of the offer.”

John Compton is a former chief executive of the Health and Social Care Board. He said the number of people with the flu is likely to go up.

“I suspect it’s still a couple of weeks away before the flu peaks,” he said.

“Traditionally the busiest time of the year for our hospital sector is just after Christmas.”

He added that “already things are pretty busy and pretty difficult”.

“I suspect it will be a very difficult winter for our health system and for patients and families who are using it.”