House parties are the "perfect place" to spread Covid-19 among the younger generation, a virologist has warned.
Dr Connor Bamford voiced concerns over young people socialising without adhering to the guidelines, such as wearing face masks and keeping socially distant.
It comes after students and young people in the Holyland area of south Belfast were criticised for flouting the regulations as they begin to move to the city ahead of the new university term.
The PSNI has issued a series of Covid and prohibition notices this week in response to the street and house parties that continued throughout the week.
Dr Bamford, from Queen's University, told the Belfast Telegraph that young people need to be very careful as that generation can spread the virus at an incredibly fast rate.
"We know that young people at university age are susceptible to the virus," he said.
"They can get infected, they can spread it very well and they can actually get sick so we do have to look out for them.
"We know that we have to be really careful at the minute in that the virus can spread particularly well in crowded settings inside where people aren't socially distancing or taking precautions such as masks.
"We do have to be really careful.
"In house parties where a lot of younger individuals who aren't socially distancing, this is the perfect place for the virus to spread and especially so because we know you can spread the virus when you aren't actually sick.
"You won't be able to tell that you're infected until unfortunately it's too late."
Meanwhile, Emma Hodcroft, a molecular epidemiologist from the University of Basel, said that when cases rise in young people "you are playing roulette" as the older generation could get the virus through transmission.
"When you're shouting things and talking loudly, these are all things that increase the number of small particles that leave your mouth," she told BBC Radio Ulster's Nolan Show yesterday.
"Those can then float around the air, particularly if you're inside a room.
"They can float around and go even further than the two-metre distance that you might be keeping from someone else.
"Then of course, the closer that you are with people in general, the more chance that you will be inhaling any droplets that come from their mouth."