The World Health Organization top official has expressed concern over the rapid spread of a rare type of Ebola in Congo. Authorities have reported at least 134 suspected deaths and over 500 cases.

The head of the WHO said he was "deeply concerned by the scale and speed of the epidemic."

The director general of the World Health Organization (WHO), Tedros Adhanom Ghebreyesus, warned on Tuesday before the World Health Assembly meeting in Geneva that “the magnitude…