A typhoid outbreak is just the latest catastrophe to be inflicted on Palestinian refugees in the Yarmouk refugee camp in Syria. They've endured a bombing campaign and siege by the government of Bashar al-Assad, and more recently an invasion by Islamic State militants. December 2012 fighting has driven out the vast majority of some 200,000 refugees that had made Yarmouk their home. The UN has been denied access to Yarmouk since late March. More than 90 percent of more than half a million Palestinian refugees in Syria rely on UN assistance for survival.
