The drive to offer two doses of Covid-19 vaccine to all care home staff and residents in Northern Ireland has been completed.
Coming less than three months after the Pfizer-BioNTech vaccine was granted approval, it is indicative of the success of the hugely complicated process to date.
Looking at the wider vaccination programme, some 537,086 vaccines have now been administered to people across Northern Ireland.
But the apparent success of the programme has also thrown up a range of questions about what it means for the well-worn issue of the border.
While Northern Ireland is now vaccinating people in their 50s, in the Republic of Ireland, those aged 65 and over who live in long-term care facilities, frontline healthcare workers and those aged 85 and older who live in the community are being offered the jab. According to latest figures, 373,280 vaccinations have been administered south of the border.
This has prompted Lord Kilclooney, a former deputy leader of the UUP, to call on the Executive to help the Republic ramp up its Covid vaccination programme.
He said: "Some 96% of the population in the Republic have not been vaccinated and we have freedom of movement on this island. So, it is important for the health of people in Northern Ireland also to help as many people get vaccinated as we can."
It is true, as the chief medical officer has stated on numerous occasions, that none of us are safe until all of us are safe, which is why the UK and other countries are looking at donating vaccines to developing nations.
So, it isn't the altruistic act that it first appears to be - increasing immunity in some of the poorest countries will in turn help to keep the virus under control here.
And with so much travel in both directions over the border in Ireland, there are concerns about the different position here in Northern Ireland compared to the Republic.
Padraic O'Kane, a managing partner at the Fire Steakhouse & Bar at the Mansion House on Dublin's Dawson Street and Sole Seafood & Grill on South William Street in the city, lives in Newry.
He said he believes the faster rollout of the vaccine in Northern Ireland will "cause issues" for him and his hospitality peers.
"It's looking like Northern Ireland will be around eight to 12 weeks ahead of the south when it reopens and that will cause us issues no doubt," he said.
"We're working from a perspective of indoor dining on July 1, with outdoor dining in May. Northern Ireland could be at least a month ahead of that and that will be a problem for those businesses around the border counties.
"It then comes down to free movement. Will you be able to travel freely in Northern Ireland while in the south we can't leave our county? We believe we could open at the same time in a safe way and there are safe ways to it.
"But in Dublin we've taken the attitude that we don't want to reopen if it means opening and closing again and again. We've gone past that.
"When we look at the economy opening again, schools will go back, then construction. There will be more opening before us. If the Northern Ireland Assembly goes with London's plans, there will be a big gap and I worry will the south be able to catch up?"
A resident in Newry, Mr O'Kane added: "Living in Northern Ireland will not only mean I will have the vaccine before all my staff but before my mother in Cork and a lot of vulnerable people in the south."
Colm Shannon, chief executive of Newry Chamber of Commerce, said businesspeople in the area were concerned about the contrasting paces of the vaccination programmes on either side of the border.
"I've spoken to a couple of businesspeople across the Chamber where it has been mentioned, that there will be a time-lag in the impact of the vaccine on both sides of the island with the south about two months behind," he said.
"But the other thing Covid has taught us is that you can't predict anything and it's hard to tell what the impact might be.
"Irrespective of what way the vaccine rollouts might work, there will be a nervousness with travelling too far until people are comfortable and consumer confidence starts to grow again."
However, according to Dr Connor Bamford, a virologist from Queen's University, the disparity in the rollout of the vaccine programmes may have little impact when it comes to community transmission levels.
To begin with, the figures relating to the number of vaccines administered to date are somewhat misleading. While the Republic of Ireland has administered 373,280 jabs to Northern Ireland's 537,086, each nation is following a different policy - the UK has delayed the second dose of the vaccine to increase the number of people with a proportion of protection from the virus.
In comparison, the Republic of Ireland is adhering to the advice given by the pharmaceutical companies that created the vaccines and is working towards maximum protection for the most vulnerable members of society. This means 102,541 more people in the Republic of Ireland have had two doses of the vaccine than in Northern Ireland.
Dr Tom Black from the British Medical Association said the jury is still out on which policy is most effective, while Dr Bamford said: "It's really hard to predict what strategy is better. In addition, it isn't just about the vaccines, it also depends on the restrictions - the Republic will have more restrictions in place than us so should have less virus circulating.
"If anything, it may be worse for the Republic as we will probably have more virus but I also think that any impact arising from the difference in the number of people vaccinated will only be for a very short length of time. In reality, it is very difficult to compare and make predictions because the two vaccination strategies are different."