title: [State of natural infection with Legionella during the winter and summer seasons].
mesh_terms: D000293:Adolescent; D000328:Adult; D000907:Antibodies, Bacterial / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D006801:Humans; D007223:Infant; D007875:Legionella / Q000276:immunology; D007877:Legionnaires' Disease / Q000453:epidemiology* / Q000276:immunology; D008297:Male; D012621:Seasons
chemical_list: D000907:Antibodies, Bacterial