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目的了解福州市健康人群携带沙门菌的血清型构成及变迁的情况,为预防该菌引起的食物中毒提供依据。方法对健康人群进行细菌检查,并对分离出的沙门菌进行血清学分型,分析各年份菌型的构成及变迁情况。结果 2009—2012年沙门菌共有4个血清群,26种血清型。其中B群有108种血清型,占39.44%;C群有9种血清型,占35.21%,各年B和C群构成比差异无统计学意义(P>0.05),2009—2012年主要流行菌群未发生改变。26种血清型中所占比例较多的有布伦登卢普沙门菌(14.08%)、德尔卑沙门菌(12.68%),肠炎沙门菌(8.45%)。结论 2009—2012年福州市健康人群所携带的沙门菌血清型分布广泛,每年主要流行菌群为B和C群,具体血清型分布略有不同。不同年份,菌群分布发生局部变化,非优势菌群有可能成为优势菌群,应注意加强对沙门菌菌群变迁的监测,预防优势菌群沙门菌食物中毒的突然暴发。
Objective To understand the constitution and changes of serotypes carrying Salmonella in healthy population in Fuzhou and provide evidence for preventing food poisoning caused by this bacterium. Methods Bacteria were detected in healthy population, and the serotypes of Salmonella isolates were analyzed. The constitution and changes of bacteria in each year were analyzed. Results There were 4 serogroups and 26 serotypes of Salmonella in 2009-2012. There were 108 serogroups in group B, accounting for 39.44%. There were 9 serogroups in group C, accounting for 35.21%. There was no significant difference in the constituent ratios of B and C groups in each year (P> 0.05) The flora did not change. Salmonella Brennan (14.08%), Salmonella delphi (12.68%) and Salmonella enteritidis (8.45%) accounted for a large proportion of the 26 serotypes. Conclusion The serotypes of Salmonella carried by healthy population in Fuzhou from 2009 to 2012 are widely distributed. Each year, the major epidemic groups are B and C, and the distribution of specific serotypes is slightly different. In different years, the local distribution of flora changes, non-dominant flora may become the dominant flora, should pay attention to strengthen the monitoring of Salmonella flora changes, prevention of dominant flora Salmonella food poisoning sudden outbreak.