A public information board explains the symptoms of the deadly Ebola virus in the city of Freetown, Sierra Leone, Aug. 4, 2014. (AP Photo/ Youssouf Bah)
A public information board explains the symptoms of the deadly Ebola virus in the city of Freetown, Sierra Leone, Aug. 4, 2014. (AP Photo/ Youssouf Bah) AP
A public information board explains the symptoms of the deadly Ebola virus in the city of Freetown, Sierra Leone, Aug. 4, 2014. (AP Photo/ Youssouf Bah) AP

WHO declares Ebola a worldwide 'public health emergency'

August 08, 2014 5:57 AM