1 发病情况 在我国,养殖红鳍东方鲀链球菌病最早于2000年春季在大连确认于室内水槽越冬养殖1龄鱼。尔后,在大连,陆续于2002年春季发现于室内水槽越冬养殖1龄鱼和2龄鱼,并发现于室内水槽培育1月龄稚鱼,于2002年夏秋季发现于海面网箱养殖1～3龄鱼,于2002年秋季发现于池塘培育出池后转放到海面网箱暂养的当年鱼, 1 The incidence of disease In our country, the breeding of redfin Oriental Streptococcus suis initial confirmed in Dalian spring in 2000 in the indoor sink overwintering breeding fish. Later, in Dalian, one year old fish and 2-year-old fish were found overwintering in the indoor sinks in Dalian in the spring of 2002. One-month-old juveniles were found in indoor sinks and were found in sea-cage culture 1-3 in the summer of 2002 The age of fish, found in the fall of 2002 in the pond to cultivate a pool transfered to the sea cage holding fish,