云南省个旧市鼠疫的流行病学调查

Epidemiological Investigation on Plague in Gejiu City, Yunnan

１９９６年７～１２月，云南省个旧市发生了鼠疫流行。经现场流行病学调查，病原学和血清学检验，证实腺鼠疫患者５人；并从黄胸鼠体分离到鼠疫菌５株，查出反相血凝阳性６份。对所获３株鼠疫菌做了质粒图谱分析，除携有６５、４５和６ＭＤ三种质粒外，还有分子量约４ＭＤ的质粒。调查认为：此次鼠疫流行为我省北纬２５°以南的历史家鼠（黄胸鼠）鼠疫疫源地在静息８５年后的地区性复燃。

An epidemic episode of plague happened in Gejiu City, Yunnan Province from July to December in 1996. The field investigation, pathogenic and seriological tests were made during epidemic period. Five patients with bubonic palgue were found. Five strains of Y.pestis were isolated from R.flavipectus, and six positive samples were also verified through RPHA. The test of plasmid profiles was carried out in three strains of Y.pestis, and three kinds of plasmids with 65, 45 and 6 MD of molecule weight were found out apart from another palsmid weighed about 4 MD of molecule weight. The epidemic area is considered a historical prevalent focus belonged to the house rats' plague, and the epidemic episode might be a recurrence after 85 years' silence.