About 25,000 people are wounded each month in the escalating warfare in Syria and it getting harder to deliver medical supplies for civilians trapped in areas held by Islamic State insurgents, the World Health Organization said on Friday.

It said that typhoid and diarrhea are on the rise due to the lack of clean water and that with winter setting in, more acute respiratory infections are expected, especially among children and the elderly.

On top of that, there are concerns that deadly cholera could spread into Syria from Iraq.