Lebanon is facing "staggering unmet health needs" as thousands of civilians cry out for reconstructive surgeries and physical rehabilitation after the Hezbollah-Israel ceasefire, the World Health Organization Lebanon Office said.

Over 4,000 people have been killed and 17,000 others injured in Lebanon since last October, and the death toll has been climbing continuously "as more bodies are found in the 16,000 buildings that have been partially or destroyed, leaving an estimated 8 million tonnes of debris," the office said in a news release.

"One in four people with life-changing injuries will need long-term rehabilitation," it noted.

Most hospitals in Lebanon are running below capacity due to financial restraints and shortages of health workers, long-standing challenges in Lebanon, it said.