Liberia’s health minister says two patients have tested positive for the deadly Ebola virus, which is already believed to have killed at least 70 people in neighboring Guinea. Walter Gwenigale said one patient was married to a Guinean man and had returned ill from a recent trip there. She died in Lofa County. The second patient is a sister of the dead woman. Gwenigale said she is alive and has been isolated in a medical center outside of Monrovia, declining to give further details.