The vaccination campaign is due to start on Sunday, WHO senior official for the Palestinian territories Rik Peeperkorn said.
He said the agreement was for the pauses to take place between 6am and 3pm.
He said the campaign would start in central Gaza with a three-day pause in fighting, then move to southern Gaza, where there would be another three-day pause, followed by northern Gaza.
Peeperkorn added that there was an agreement to extend the humanitarian pause in each zone to a fourth day if needed.
— UN News (@UN_News_Centre) #UPDATE#Gaza: UN health agency, WHO, alongside partners to start polio vaccination campaign on 1 September, says Dr. Rik Peeperkorn, @WHOoPt chiefCampaign to be conducted in two rounds; vital that it reaches at least 90% coverage in both rounds pic.twitter.com/RLv9VYE4pMAugust 29, 2024
These humanitarian pauses are not a ceasefire between Israel and Hamas that talks mediators the United States, Egypt and Qatar have long been seeking, including in talks that are ongoing this week.
The WHO confirmed on August 23 that at least one baby has been paralysed by the type 2 polio virus, the first such case in the territory in 25 years.
The baby in Gaza was infected with a mutated strain of the virus that vaccinated people shed in their waste, according to scientists.
The infection paralysed the lower part of one leg in the unvaccinated 10-month-old child.
The baby boy was one of hundreds of thousands of children who missed vaccinations because of the fighting in the Gaza Strip.
The United Nations Security Council will meet later on Thursday on the humanitarian situation in the enclave.
"We are ready to co-operate with international organisations to secure this campaign, serving and protecting more than 650,000 Palestinian children in the Gaza Strip," Hamas official Basem Naim told Reuters.
The Israeli military's humanitarian unit (COGAT) said on Wednesday that the vaccination campaign would be conducted in co-ordination with the Israeli military "as part of the routine humanitarian pauses that will allow the population to reach the medical centres where the vaccinations will be administered".
Following the discovery of polio viruses in waste water, vaccines were brought into the Gaza Strip. (AP PHOTO)
The latest bloodshed in the decades-old Israeli-Palestinian conflict was triggered on October 7 when Palestinian Islamist group Hamas attacked Israel, killing 1200 and taking about 250 hostages, according to Israeli tallies.
Israel's subsequent assault on the Hamas-governed enclave has since killed more than 40,000 Palestinians, according to the local health ministry, while also displacing nearly the entire population of 2.3 million, causing a hunger crisis and leading to genocide allegations at the World Court that Israel denies.
with AP
