Along with hundreds forcibly expelled from Algeria between mid-march and mid-April, they are now stranded in transit centres and across Niger. Some are living in harsh conditions in makeshift quarantine camps in Agadez, the town in the north of Niger that has historically been a hub for migrants. They include children, pregnant women and older people.
Others have been blocked heading back to Zimbabwe
. In Musina, the last town in South Africa before the frontier, hundreds of people have gathered in increasingly harsh conditions.