An actress died during a bizarre spiritual cleansing ritual at a retreat in Mexico, when she took the venom of an Amazonian frog and suffered severe vomiting while being denied medical treatment, report said. Marcela Alcázar Rodríguez, 33, died on Dec. 1 after ingesting Kambo — a gluey, poisonous substance produced on the skin of the Amazon’s giant monkey frog — during a toxin cleansing ritual in Durango. Though Rodríguez suffered a sever reaction to the poison, she initially was denied medical attention by the retreat before finally being taken to a Red Cross hospital, where she died, witnesses said,...