Waterborne diseases like cholera, diarrhea and dysentery were already spreading among the millions staying in relief camps or under the open sky. Malnutrition is further weakening their defence systems.
With top health official, a national guiding committee has been put up to monitor the situation on a regular basis in the flood affected region in Pakistan.
"As human misery continues to mount, we are seriously concerned with the spread of epidemic diseases," said Prime Minister Yousuf Raza Gilani.
Finance officials were holding talks with the International Monetary Fund to revise the terms of the country's $ 10-billion loan programme.
The country's president, Asif Ali Zardari, warned Monday, Aug 23 that it would take at least three years for the country to recover.