More than 4.2 million people have been affected by monsoon floods in Pakistan's Punjab province, with southern districts bearing the brunt, according to a rapid needs assessment released by the United Nations Office for the Coordination of Humanitarian Affairs (UNOCHA) on Friday.

The survey, conducted jointly with the provincial government from September 8 to 18, covered nearly 2,000 villages in 18 flood-affected districts.

The assessment found that around 2.8 million people were displaced, about 161,700 houses were damaged, and health and education infrastructure also suffered extensive damage.