Health authorities are hoping to apply lessons learned during the Covid-19 vaccination rollout to boost the country's faltering childhood immunisation programme.
Rates have been on the decline since 2017 and have taken a further hit during the pandemic.
The Ministry of Health aims for 95 per cent of children to be fully vaccinated at the milestone ages of 8 months, 24 months and 5 years old.
But since December 2019, the rate at 8 months, for example, has dropped from just over 90 per cent (90.3) to 87.1 per cent and at 24 months from 90.8 per cent to 85.2 per cent.
Immunisation Advisory Centre director Dr Nikki Turner said it was important children got their shots when they were due.
"If they don't get them on time then they are at risk of vaccine-preventable disease and we are particularly concerned about whooping cough, which does resurge. The second big challenge we've got is measles coverage."
Turner said Covid-19 had disrupted the childhood immunisation programme, but also offered clues about how to make up that ground.
"We've learned a lot from Covid around engaging local services that work with local communities.
"We need to take these learnings forward and work closely with our communities and our primary care services to make sure children and pregnant women are enrolled in primary care, that people know about them and offer them services and reach out to them through our communities when they are late or getting lost."
Taranaki iwi health provider Tui Ora clinical nurse leader Robyn Taylor works on the vaccine frontline.
"We are getting some children coming in but it's nowhere near like it used to be, so there's a lot more overdue children, which is a concern once the borders open and we're going to have a measles outbreak, which is almost like not if but when."
Since the beginning of the pandemic, the rate for Taranaki Māori infants being fully immunised at 8 months has dropped from 80 per cent to 69 per cent.
The rate for the general population has declined three per cent to 89 per cent.
Taylor said Covid-19 explained the slide.
"When we were in lockdowns, people weren't going anywhere.
"I think there's been a huge focus on Covid and I think it's just people not wanting to take their children out and about especially at the moment while there is Omicron everywhere."
She said in response Tui Ora was now offering childhood vaccines alongside the Pfizer jab.
Taranaki Covid-19 vaccine rollout boss Bevan Clayton-Smith said collaboration between agencies had been key to the province achieving 93 per cent double dose coverage and the strategy needed to be adopted across the board.
"Once you've got a common purpose and everyone understands what we're doing it and how we're doing it together and how we leverage off how we've done that to date then I think that makes the job easier rather than returning to traditional ways of working prior to Covid."
Clayton-Smith said no infant should be at risk of getting whooping cough, "and then experience potential lifelong episodes of chest infections and upper and lower respiratory tract infections through scarring of the lungs.
"No child deserves that start in life, so everything we can do and everything parents can do and caregivers can do to protect their children, it's only got to be a good thing."
As part of the new strategy, a dozen measles, mumps and rubella (MMR) vaccines have been given at Covid-19 clinics in Taranaki so far.
But there were no takers during a drive-through clinic in Waitara at the weekend.