The source of infection in Tianjin Hailian cold storage is North American pig head At the press conference, MS. 張英, 天津CDC副所長, 天津海聯冷蔵倉庫に持ち込まれた感染源は北米産豚の頭! 割れ目! 天津海聯冷蔵倉庫の感染源は北米産豚の頭. The first case …