In all of Sierra Leone, population 7.8 million, only one functioning freezer can offer storage at that temperature. But in Sierra Leone and other sub-Saharan African countries, even ordinary refrigeration is a challenge. And they could also be the solution to the COVID vaccine storage problem as well, particularly for the vaccines that don't require ultra-cold temperatures. The Songo Health Clinic in Northern Province is one of the many government health facilities across Sierra Leone that doesn't have electricity. And the limited COVID doses haven't yet been distributed to small clinics like Koroma's in Songo.