Official says WHO doesn't know exactly how a lab worker in Russia died in plague case

GENEVA — A top official with the World Health Organization said Wednesday the U.N. health agency doesn’t know how a lab employee in Siberia died amid concerns about plague, and she called on Russia to provide more information.

Maria Van Kerkhove, WHO director of epidemic and pandemic Management, said the agency doesn’t know what the “causative agent’ was behind the woman’s Oct. 2 death, and “this is why we need more information.”