It just doesn't matter in Africa. People are dying of disease every day. They have river blindness, tuberculosis, HIV, cholera, west nile virus, parasitic worms of every type, malaria... oh, and also the Wuhan lab virus, which usually doesn't even kill people.

There is no reason to test for the virus. There is no reason to care at all. It's a rounding error in the disease statistics.

At the battle of Gettysburg, or at the Las Vegas massacre, blisters and skinned knees weren't a concern. It's not that they didn't happen, but they were such a low priority that the doctors weren't going to care.