This undated photo made available by the Antwerp Institute of Tropical Medicine in Antwerp, Belgium, shows the Ebola virus viewed through an electron microscope. The World Health Organization on Aug. 8, 2014 declared the Ebola outbreak in West Africa to be an international public health emergency that requires an extraordinary response to stop its spread.
This undated photo made available by the Antwerp Institute of Tropical Medicine in Antwerp, Belgium, shows the Ebola virus viewed through an electron microscope. The World Health Organization on Aug. 8, 2014 declared the Ebola outbreak in West Africa to be an international public health emergency that requires an extraordinary response to stop its spread. AP
This undated photo made available by the Antwerp Institute of Tropical Medicine in Antwerp, Belgium, shows the Ebola virus viewed through an electron microscope. The World Health Organization on Aug. 8, 2014 declared the Ebola outbreak in West Africa to be an international public health emergency that requires an extraordinary response to stop its spread. AP

Teachers' return from West Africa raises Ebola concerns

August 13, 2014 8:26 PM