You’re right. Anybody who has ever seen the inside of a third world hospital knows why so many health care workers are getting infected.
Same third world hospitals and likely to be less helpful PP equipment.
You have to tease out the factors - cause and effect are not always so easy to call.
This is the 6th strain and each strain has had different characteristics.
This is a long video but it’s a NOVA episode on ebola.
Check out the obviously 3rd world hospital and the garb the medical people are wearing.
https://www.youtube.com/watch?v=wlLuS08A8TQ
Almost none of the medicos got it.