Bacteriological and serological diagnosis of community-acquired @entity697 , specially Legionnaire's disease. Multicentric prospective study of 274 hospitalized XXXX .

@entity1 @entity697 @entity2926 @entity17553 @entity55 @entity2260 @entity327 @entity794 @entity3274 @entity683 @entity2114 @entity281 @entity28664 @entity1047
In 1982 and 1983 a prospective study was carried out involving 274 adult @entity1 hospitalized with community-acquired @entity697 . The results of the bacteriological and serological diagnoses are presented here. Conventional and standardized bacteriological methods were used. All the serodiagnoses of LD were carried out with the 13 antigens produced by the "Centre National de R  f  rence" ( @entity2114 1, 2, 3, 4, 5, 6; L. micdadei; L. bozemanii, @entity17553 , L. jordanis; L. gormanii; @entity28664 1 and 2). Standardized criteria were used for the interpretation of results. Conventional methods were used for the other serodiagnoses. Because the laboratory results had been interpreted very rigorously, an etiological diagnosis was established only in 51% of @entity55 cases. Other reasons, such as the frequent prescription of antibiotics prior to hospitalization, may explain why no aetiology could be determined in 49% of cases. The microbial agents responsible were: @entity2260 , @entity28664 and @entity2260 in 62% of cases; @entity327 , @entity3274 , @entity1047 and @entity794 in 21.6%; and viruses in 8.6%. 29 (10%) of the 274 @entity55 cases were caused by @entity28664 , being second to @entity2260 . The preponderance of @entity2114 was striking (22 cases), 3 @entity28664 strains were isolated ( @entity2114 serogroup 1:2 strains, serogroup 6:1 strain). Three associated or successive infections were observed ( @entity683 , @entity2926 , @entity281 ). As regards the other bacteria, implication of the strain isolated was based on its multiple occurrence in several samples.(ABSTRACT TRUNCATED AT 250 WORDS)
