/b/veterinary-news/posts/avishield-avian-bronchitis-vaccine-license-extended Dechra Veterinary Products has extended the licence on its infectious bronchitis vaccine, Avishield IB G1-13, which is now available for laying hens and breeding chicks throughout the production period. Avishield IB G1-13 is indicated for active immunisationen-USTelligent Community 10