has role immunizes against pathogen test in lab animal model human respiratory syncytial virus Chlorocebus aethiops vaccine in research role Human respiratory syncytial virus vaccine Human Respiratory Syncytial Virus M2-2 mutant vaccine An M2-2 mutant of human respiratory syncytial virus A2 is attenuated in African green monkeys. When challenged with wild type RSV, two doses provided complete protection against challenge in the lower respiratory tract and a significant reduction of the challenge virus in the upper respiratory tract VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=3219 3219 Rebecca Racz Oliver He vaccine