Cleanup operations have begun in parts of Serbia and Bosnia after massive floods, even as cities on the Sava River brace for a new wave of flooding.
Thousands of people were evacuated in both countries.
Serbian Prime Minister Aleksandar Vucic said 44 people were reported killed -- 16 in Serbia, 27 in Bosnia, and one in Croatia.
Authorities are now concerned that higher temperatures, thousands of animal carcasses, and polluted water may lead to outbreaks of disease.
River levels were still rising in the Serbian capital, Belgrade, and further west toward the Bosnian border.
In Bosnia, where one-third of the country is dealing with flood conditions, some 300 mudslides have been reported, mostly in the northeast.
Officials in Bosnia are also concerned that the flooding will unearth some of the landmines left over from the 1992-95 war and that minefield warning signs will be washed away.
PHOTO GALLERY: Thousands of people have fled their homes amid massive floods in Serbia and Bosnia-Herzegovina.
Based on reporting by Reuters, Interfax, AFP, and AP