Doctors don’t know what killed this Missouri mom and son

Doctors don’t know what killed this Missouri mom, son | Las Vegas Review-Journal: "St. Peters, MO — A mysterious sudden death of a mother and her adult son are raising concerns of a possibly dangerous virus. Zach Smith, 19, and his mother Rhonda Smith, 48, both of St. Peters, died within four days of each other after being in seemingly perfect health."