by Agnès Pedrero Agence France-Pressec ZURICH, Switzerland (AFP) — A deadly virus has swept through Zurich’s zoo, killing three Asian elephants in a month and leaving experts stumped as to how to stop its spread. The zoo overlooking Switzerland’s largest city now has only five of the majestic creatures roaming its 11,000-square-metre (118,400-square-foot) elephant enclosure. Two-year-old bull Umesh was the first to fall victim to the Elephant endotheliotropic herpesvirus (EEHV) at the end of June, […]