http://www.who.int/mediacentre/news/ebola/22-august-2014/en/
“Why the Ebola outbreak has been underestimated”
http://www.reuters.com/article/2014/08/22/us-health-ebola-who-idUSKBN0GM0RW20140822
“WHO warns of ‘shadow zones’, hidden cases in Ebola outbreak”
Note how the Chinese healthcare worker is attired. Looks like full PPE to me. Not just a mask and gloves.