There are no reasons not to get slotxo the Covid-19 vaccine if eligible, as Northern Ireland experiences a fourth Covid-19 wave, NI's chief medical officer has said.
Sir Michael McBride said cases are expected to increase rapidly.
About 400 people with Covid could be in hospital at any one time by the end of the summer, he added.
But he said if 90% of the population gets their first jab by the end of the month, that could be reduced by half.
About 80% of the adult eligible population in Northern Ireland have so far received their first dose, and about 60% are fully vaccinated.
Health Minister Robin Swann has encouraged more young people to get the Covid-19 vaccine.
Speaking in the NI assembly, he said walk-in clinics would be rolled out in towns and villages across Northern Ireland in the coming weeks.
Initiatives targeting specific industries such as fishing and meat processing will also be put in place.
"This is a race between the vaccine and the virus," the minister added.
Meanwhile, chief scientific adviser Prof Ian Young said people booking overseas travel are taking a risk.
He also told BBC's Good Morning Ulster programme that it was "highly likely" people aged over 50 would need a Covid-19 booster jab by the autumn.
A further 420 cases of Covid-19, but no deaths, were reported on Monday.