The importance of vaccination has been emphasised as Northern Ireland's top medic confirmed it has entered a fourth wave of the Covid-19 pandemic.
Another 420 confirmed cases of the virus were notified by the Department of Health today.
Chief medical officer Michael McBride said case numbers will increase rapidly as restrictions on movement are eased and the Delta variant is now dominant.
But he said the infection rate can be slowed by following public health advice and getting vaccinated.
Around 80% of the adult population in Northern Ireland, eligible for a Covid-19 vaccination, has received one dose while more than 60% has received two.
"We are in the fourth wave of this virus, there is no doubt about that, numbers will increase rapidly and we can do things to slow that, we can continue to follow the public health advice but most importantly now is the time to get the vaccine," Mr McBride said.
He added on the BBC’s The Nolan Show: "Numbers will peak in August/early September and then after a delay of eight to 10 days we will see that begin to translate into hospital admissions.
"If we can get our vaccination rate up to 90%, we can reduce the number of people in hospital at any one time from 400 to approximately 200."
This morning there were 32 Covid-positive patients in hospital, of whom four were in intensive care.
Mr McBride said the health service is on track to have delivered 85% of first doses of the jab by the end of this month.
He said that around 56% of 18 to 29-year-olds have been vaccinated so far, and urged those in that age bracket to come forward.
"The vaccine is doing a lot of the heavy lifting, it is weakening the link between infections and the number of people being admitted to hospital, it hasn't broken that link completely.
"It’s really, really important that as many of us get vaccinated because that builds a wall around the people who are vulnerable ... and who wouldn’t want to reduce by 50% the number of people towards the end of the summer who are in our hospitals."
Earlier, chief scientific adviser Ian Young also encouraged take-up of the vaccine.
"It is likely to peak some time in August, possibly early September, based on our modelling and the question is to what extent that will lead through to hospital admissions," he told BBC Radio Ulster.
"Because of the success of the vaccine programme, the number of admissions will be less compared with previous waves but it can still be very substantial and at the moment we’re anticipating possibly up to around 400 patients in hospital with Covid towards the end of the summer.
"That’s why we need to push vaccination now, we can reduce that number substantially, probably by around half, if we can get up to 90% of the adult population vaccinated."
Mobile vaccination clinics are being rolled out across Northern Ireland to make the jab more accessible and mass vaccination centres are offering walk-in appointments.
Health Minister Robin Swann has described the recent increase in the number of cases of the virus as a "serious concern".
He said the latest cases are mostly within the younger age groups, and urged those to come forward to be vaccinated.
To date, 2,070,574 vaccines have been administered in total.
