WHO withdraws Ebola virus staff in Sierra Leone

Why so many health care workers are being infected

Protective gear such as gloves and gowns are critical to protect health-care workers from the Ebola virus but don’t go far enough, doctors say as the World Health Organization announced it’s shut down a laboratory in Sierra Leone after a health worker was infected.
The Ebola virus outbreak in Sierra Leone, Guinea, Liberia and Nigeria  is the largest ever with at least 1,427 deaths and 2,615 infected since March.
http://www.cbc.ca/news/world/who-withdraws-ebola-virus-staff-in-sierra-leone-1.2746945