Can you stop malaria crossing borders? One nation’s bid to wipe out the disease

Informal migration, plus climate change and rising numbers of cases globally, are complicating the tireless efforts of the landlocked African country to eradicate the killer diseaseThe freezer is filled with blue-lidded tubes of cows’ blood, ready to be defrosted and used to feed the colony of mosquitoes. “Also, you can use your arm,” says Nombuso Princess Bhembe, who tends the mosquitoes at Eswatini’s national insectary, an unremarkable building in the town of Siphofaneni, part of the southern...