47 volunteers have returned to U.S.
An NBC poll of 13 aid agencies including Doctors Without Borders, International Medicine Corps. Save The Children, and American Red Cross, shows that about 150 volunteers have gone to west Africa and 47 have returned to the U.S., without infecting anybody. California Department of Public Health director Dr. Ron Chapman:
Not everyone who has been to an Ebola affected area should be considered high risk.