Objective To understand the status of Legionella contamination in water and Legionella infection in people in Longyan City,and to provide evidence for relevant control and prevention.Methods According to the requirements of Le-gionnaires'Disease Surveillance Program of Fujian Province(Revised Version),the water in public places in Longyan was detected from 2019 to 2022 to examine whether there was Legionella contamination by isolating,culturing and identifying Legionella.ELISA was used to detect the level of Lp1-7 antibody in the serum of hospitalized pneumonia patients and some healthy people.Results The overall prevalence of Legionella in water in public places was 2.97％.The cooling tower water had the highest prevalence of Legionella(3.38％).Both hospitalized patients with pneumonia and healthy people had high prevalence of Legionella pneumophila(Lp),with pooled prevalence of 16.93％,among which the pooled prevalence of IgG(13.04％)was significantly higher than that of IgM(3.89％).There was no significant difference in the prevalence of IgG positivity,IgM positivity,or IgG with IgM positivity between the two groups(x2=0.04,2.41,0.98,P＞0.05).Conclusion Legionella was detected in water in public places,and there was high prevalence of Lp among the population in Longyan,so Legionella monitoring should be strengthened to prevent the incidence of Legionnaires'disease.
Water in public placesLegionellaLegionella pneumophilaLp1-7 antibody
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