Have you seen the conditions over there? Rewashing gloves and boots and sometimes no electricity or running water and African staff and tattered protective gear?
You are absolutely corrrect. Zero supporting infrastructure and replacement supplies. No containment and to compound the issue, the people are hiding the sick, then there are the people way back in the bush with the bush doctor.
These healthcare professionals are being bombarded with high concentrations of virus and it takes very little for a breach.