A man carries a box of protective masks to emergency workers Thursday in Dakar, the capital of Senegal. The West African country has seen relatively few confirmed cases of the coronavirus to this point — but global health officials fear that won’t always be the case.

A man carries a box of protective masks to emergency workers Thursday in Dakar, the capital of Senegal. The West African country has seen relatively few confirmed cases of the coronavirus to this point — but global health officials fear that won’t always be the case.