Israel-Gaza updates: Israel says ground operation underway in southern Gaza

Itai Pessach, director of Edmond and Lily Safra Children's Hospital at Sheba Medical Center, praised the newly released hostages who arrived at the hospital Tuesday, calling them "extraordinary women" who "endured the hardships of their captivity in a remarkable fashion."

"Some of them had complex underlying illnesses and some suffered injuries when they were abducted or during their time in captivity," Pessach said. "They will need further medical treatment and attention, but there's no immediate danger to any of them."

Twelve hostages were released on Tuesday in the most recent prisoner swap: 10 Israelis and two foreign nationals from Thailand. Nine of the Israelis were women. One was a 17-year-old girl, Maya, and her dog, Bella.

Pessach called Maya "a very brave young woman. "

"Bella also was examined last night by the veterinarian service of the Sheba Medical Center, and she's also fine, and she would stay with Maya for as long as she needs while they are still here," Pessach said.

The Israeli Prime Minister's Office confirmed that it has received the list of hostages due to be released by militants in the Gaza Strip on Wednesday.

The families of the hostages on Wednesday's list have all been notified, the Israeli Prime Minister's Office said.

The truce between Gaza's militant rulers, Hamas, and Israel is set to expire on Thursday morning, but the possibility of extending it further is reportedly under negotiation.

-ABC News' Dana Savir and Morgan Winsor

Two Palestinian children were allegedly gunned down by Israeli soldiers operating in the militant stronghold of Jenin in the Israeli-occupied West Bank on Wednesday, according to Palestinian health officials.

The Palestinian Authority, the Fatah-led governing body that oversees parts of the West Bank, identified the two victims as an 8-year-old boy and a 15-year-old boy who it said "were killed by occupation bullets in Jenin."

The Palestine Red Crescent Society confirmed that its crews had transported the younger child from Jenin's al-Basateen neighborhood before he was pronounced dead.

Surveillance footage reviewed by ABC News purportedly shows the moment both boys were shot, but the perpetrators were out of sight.

ABC News has reached out to the Israel Defense Forces for comment.

The alleged incidents occurred as the Israeli military carried out hourslong raids on the Jenin refugee camp.

Deadly violence has surged in the West Bank since Hamas, the rival Palestinian faction that governs the Gaza Strip, carried out an unprecedented attack on neighboring Israel on Oct. 7, prompting Israeli forces to retaliate.

-ABC News' Nasser Atta and Morgan Winsor

Approximately 1.3 million people are currently living in shelters in the war-torn Gaza Strip, according to head of the World Health Organization, who warned Wednesday that "a sustained ceasefire" between Israel and Hamas is "a matter of life or death for civilians" in Gaza.

WHO Director-General Tedros Adhanom Ghebreyesus said "overcrowding and lack of food, water, sanitation and basic hygiene, waste management and access to medication are resulting in a high number of cases of" various contagious diseases, including 111,000 cases of acute respiratory infections, 12,000 cases of scabies, 11,000 cases of lice, 75,000 cases of diarrhoea, 24,00 cases of skin rash, 2,500 cases of impetigo, 2,500 cases of chickenpox and 1,100 cases of jaundice.

"On top of all this: heightened risk of disease outbreaks," Tedros wrote in a post on X, the social media platform formerly known as Twitter.

"Given the living conditions and lack of health care, more people could die from disease than bombings," he added. "We need a sustained ceasefire. NOW. It's a matter of life or death for civilians."

Gaza, a 140-square-mile territory governed by the Palestinian militant group Hamas, is home to more than 2 million people.

-ABC News' Morgan Winsor