The UN-supported polio vaccine campaign concluded in besieged northern Gaza on Monday, with agencies inoculating 94,000 children, but thousands remain out of reach.

Richard Peeperkorn of the World Health Organisation (WHO) in the Occupied Palestinian Territory said the target was to reach all children in the north with the second and final dose.

“We covered many more children than we expected, but we missed some,” he said during a briefing via videolink for reporters at UN Headquarters on Monday, emphasising that evacuation orders had recently displaced thousands of people.

Yet the ongoing year-long war combined with weeks of siege and Israel’s constant displacement orders and bombings had presented serious delays and obstacles.

Still, the UN agency for Palestine refugees, UNRWA, said 79 per cent of children in the northern Gaza Strip are now completely vaccinated against polio.

“Humanitarian pauses are critical for the rollout of this vital campaign, but without a lasting #CeasefireNow children will continue to suffer and die,” UNRWA said on social media early Monday.

Top UN officials were alarmed at violent incidents reported at some of the sites where parents, their children and aid workers gathered for the campaign roll out.

WHO’s chief Tedros Ghebreyesus, however, expressed grave concern over the weekend reports of attacks on a health centre.

The head of the UN Children’s Fund (UNICEF) Catherine Russell, in a statement released late Saturday, stressed that attacks on civilians, including humanitarian workers and what remained of Gaza’s civilian facilities and infrastructure must stop.

“Taken alongside the horrific level of child deaths in north Gaza from other attacks, these most recent events combine to write yet another dark chapter in one of the darkest periods of this terrible war.

“The entire Palestinian population in north Gaza, especially children, is at imminent risk of dying from disease, famine and the ongoing bombardments,” she warned.

She noted that UNICEF is asking Israel for an immediate investigation into the circumstances surrounding an attack on its staff member and that actions be taken to hold accountable those found responsible.

The incidents occurred during agreed upon humanitarian pauses, in place from 6 a.m. to 4 p.m. during the three-day campaign.

Eradicated in Gaza 25 years ago, polio reappeared earlier this year amid the multiple humanitarian crises triggered by the war, which began following deadly Hamas-led attacks on Israel in October 2023.

To date, Israel’s war on Gaza has killed more than 43,000 people, according to Gaza’s health ministry, and destroyed vast swathes of the Strip, including water supply stations and health centres.

In spite of access challenges, the Polio Technical Committee for Gaza, which includes the Palestinian Ministry of Health, WHO, UNICEF, UNRWA and partners, decided to resume the campaign, which had been postponed since  October 23 due to the lack of security assurances.

On Saturday, 216 teams deployed across 106 fixed sites, 22 of which had been added to ensure increased availability of vaccination in areas where recently displaced people are seeking refuge, according to UN agencies.

In addition, more than 200 social “mobilisers” engaged communities and raised awareness around vaccination efforts.

The campaign in northern Gaza follows the successful implementation of the first two phases of the second round in central and southern Gaza, which reached 451,216 children, or a total of 96 per cent of the target in these areas.

 (NAN)