Detection and typing analysis of Legionella pneumophila in public places in Zhangzhou City from 2016 to 2019

GUO Bao-xian, ZHANG Li-rong, ZHONG Ling, YAO Hai-yan, ZHA Jian-xi

Anhui Journal of Preventive Medicine ›› 2022, Vol. 28 ›› Issue (5) : 393-396.

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Anhui Journal of Preventive Medicine ›› 2022, Vol. 28 ›› Issue (5) : 393-396. DOI: 10.19837/j.cnki.ahyf.2022.05.012

Detection and typing analysis of Legionella pneumophila in public places in Zhangzhou City from 2016 to 2019

  • GUO Bao-xian, ZHANG Li-rong, ZHONG Ling, YAO Hai-yan, ZHA Jian-xi
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Abstract

Objective To investigate the etiological characteristics of Legionella pneumophila in public places in Zhangzhou City from 2016 to 2019,and provide basis for health supervision and management. Methods From 2016 to 2019,445 water samples were collected from cooling water of central air-conditioning in public places and shower water in shower places in Zhangzhou City for Legionella pneumophila detection and typing analysis. Results Among the 445 samples,114 samples were positive for Legionella pneumophila,with a positive rate of 25.62%.There was statistically significant difference in the detection rate of Legionella pneumophila in different years χ2= 30.303,P<0.001).The detection rates of Legionella pneumophila in cooling water and shower water were 9.68% and 29.83%,respectively,with statistically significant differences (χ2= 13.686,P<0.001).491 positive strains were isolated,with a total of 13 serotypes.And the serotypes were mainly LP1 and LP6,accounting for 35.38% (159/491) and 23.47% (115/491),respectively.The 66 strains of Legionella pneumophila were classified into 38 band types by PFGE cluster analysis,with the similarity coefficient between strains of 26.5%-100%. Conclusion There is a certain degree of Legionella pneumophila contamination in public places in Zhangzhou City.The cleaning,disinfection and strict supervision of the centralized air-conditioning cooling towers in public places and the shower pipes in shower places should be strengthened.

Key words

Public place / Legionella pneumophila / Serotype / Pulsed field gel electrophoresis

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GUO Bao-xian, ZHANG Li-rong, ZHONG Ling, YAO Hai-yan, ZHA Jian-xi. Detection and typing analysis of Legionella pneumophila in public places in Zhangzhou City from 2016 to 2019[J]. Anhui Journal of Preventive Medicine. 2022, 28(5): 393-396 https://doi.org/10.19837/j.cnki.ahyf.2022.05.012

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