已有许多研究表明,不少蚤种能长时间保存鼠疫菌,并越过漫长的冬季,因而对于鼠疫菌的循环起到宿主作用。而长时间保菌,尤其是保菌越冬的跳蚤是否具有赖以传播鼠疫的基本机制——形成菌栓的能力,至1988年底,就作者所涉猎的文献范围,未见有报道。我们于1988年以长尾黄鼠(Citellus undulatus)鼠疫的主要传播媒 Many studies have shown that many species of fleas can save Yersinia pestis for a long time and cross the long winter so as to play a host role in the circulation of Yersinia pestis. However, the long-term preservation of bacteria, especially the over-wintering fleas, has the basic mechanism of transmitting plague - the ability to form a bacteria plug. By the end of 1988, there was no report on the scope of the literature covered by the authors. We were the main mass media for the 1988 plague of the Citellus undulatus