Available funding and new border crossings were still not enough to help quake-hit citizens in Syria's battered northwest, the head of the WHO said on Wednesday, adding he was "disturbed and heartbroken" by a visit to the rebel-held region.
World Health Organization chief Tedros Adhanom Ghebreyesus was speaking to reporters after visiting a hospital in the area, where more than 4,000 people have died as a result of last month's earthquake.
Following the quake, Syrian President Bashar al-Assad allowed the opening of two more crossings with Turkey, bringing the total to three, to allow aid into the region held by his armed opponents.
However, more access — and funding — are still needed, Ghebreyesus said.
"I don't think the existing, the three, will be enough. Any available access should be used," he told reporters in Syria.
He said he did not discuss with local authorities the possibility of aid coming in across front lines from government-held zones. Other U.N. agencies and international aid groups have criticized hardline rebels for rejecting such deliveries.
The U.N. had already struggled to gather funding to address Syria's worsening humanitarian situation before the earthquake hit, and it had secured just half of its 2022 appeal.
The U.N. said it would need nearly $400 million over three months to respond to those affected by the quake in Syria alone.
The opposition-controlled zone in the northwest is home to some 4 million people, many of them displaced by conflict in other parts of their homeland.
Hospitals there are in particularly dire condition, having been hit by airstrikes over the years and facing chronic shortages of equipment.
The U.N. said Syria's needs are now at its highest since the start of the conflict nearly 12 years ago.