Healthcare professionals in South Africa raise alarms over a looming humanitarian crisis as escalating xenophobic violence forces vulnerable migrant communities into hiding, leaving them without essential medical care.

With increasing attacks on African immigrants, even those living legally in the country are scared ahead of an unofficial deadline for illegal foreigners to leave the country.

Thousands of Malawians were awaiting clearance in makeshift encampments in South Africa Friday as tension mounted before an unofficial June 30 ultimatum for undocumented migrants…