Antibody to Reovirus type III(Reo-3) was found in SPF mice colonies kept in isolator with a positive rate of 1.6%(375/381).

• 3 81只 SPF级小鼠仅 1 996年的一次抽查中有 6只小鼠呼肠孤病毒 III型 ( Reo-3 )抗体阳性。