ISLAMABAD: Two million people have fallen ill from diseases since monsoon rains left Sindh province under several feet of water, the country's disaster authority said Thursday.

More than 350 people have been killed and over eight million people have been affected this year by floods that officials say are worse in parts of the province than last year, when the country saw its worst ever disaster.

Malaria, diarrhoea, skin disease and snake bites were among the health problems facing two million people across 23 Sindh districts, said Irshad Bhatti, spokesman of National Disaster Management Authority (NDMA).

“In some areas, diseases also spread out because of dead animals but there is no major break-out of any epidemic,” Bhatti added, calling for the donation of mosquito nets and medicines to help the aid effort.

The World Health Organization (WHO) has said that there is a desperate shortage of clean drinking water in the south which has also triggered outbreaks of acute diarrhoea and other waterborne disease.

The UN's children agency has pledged to distribute 200,000 litres (50,000 gallons) of water to 40,000 people daily and deploy 40 more water tankers soon, to avert further disease.

Parts of Sindh are under several feet of water and Pakistan's meteorological department says the worst-affected districts of Badin, Mirpurkhas and Thar seeing have seen eight times the usual levels of rainwater.

The government is trying to fend off criticism of an inadequate response to the floods one year after it was castigated for failing to respond quickly enough to its worst ever floods that affected a total of 21 million people.

Zafar Qadir, chairman of the NDMA, said that more than 550,000 people had been made homeless in the south of the country and called for urgent donations of tents.

“Over five million people are in camps and we need an immediate supply of tents to accommodate all of them. We are facing a severe shortage of tents,” he told a news conference.

He said that Japan has sent 3,500 tents so far.