Infection control is not fun. Having to wear a hazard suit and/or gown, mask, gloves, goggles, hood, and boots/booties is very hot and uncomfortable. Try wearing an N95 mask for 8 hours and see how well you fare. People will cut corners any chance they get to increase their comfort. If you don’t decontaminate properly, infection is likely.
Simply put: lack of proper personal protective equipment (PPE) and infection control is why healthcare workers are getting infected. When you don’t protect 100% of your body from infected patients, the odds of you contracting the disease increases dramatically. You must consider every surface you touch as a possible contaminant.
Without getting overly complicated in this explanation, Ebola is a Level 4 Biohazard virus. This means you need biosafety level 4 PPE. Additionally, there is no compromising on protection. You’re either in isolation or you’re not. You can’t pull your mask down to eat or drink and then put the mask back on. If your body, head and face aren’t completely covered, and by habit you scratch your cheek or wipe sweat from your brow, you likely just transferred the virus to you. Maybe not right away, but later, when you take off your protective gear, and rub your face and eyes.
If you don’t follow the correct procedures, you will probably become infected with it. Plain and simple.
Look at the images below and you can see the caretakers aren’t properly protecting themselves from it. Mystery solved. (Click on the image for the original source)