Home MR-VAC Smallpox Injection is Slow Poison for Children, Banned in Many Countries MR-VAC Smallpox Injection is Slow Poison for Children, Banned in Many Countries by Prashanth Damarla 6 years ago6 years ago MR-VAC Smallpox Injection is Slow Poison for Children, Banned in Many Countries MR-VAC Smallpox Injection is Slow Poison for Children, Banned in Many Countries