@entity5134 isolates from 164 @entity1 with suspected @entity580 in several hospitals in the greater Paris region were investigated by analysis of the electrophoretically demonstrable allelic variations of gene loci coding for five esterases and five other enzymes. All the loci were polymorphic and the mean number of alleles per locus was 6.1. A total of 72 distinctive electrophoretic types (ETs) representing multilocus genotypes was distinguished. The isolates were divided into two groups according to their resistance to antibiotics: 82 multiresistant isolates (MRI) and 82 @entity1615 ( @entity1615 ). Seventy-two MRI (88%) were in four genetically related ETs: ET1, ET2, ET8 and ET9; ET1 was found in 48 isolates, whereas the remaining MRI were in 10 ETs, and all @entity1615 in 61 ETs. Three ETs contained both MRI and @entity1615 . The mean coefficients of genetic diversity for the 10 enzyme loci among ETs and isolates were smaller for MRI than for @entity1615 , while the modal ET of MRI resembled that of @entity1615 . The epidemiological significance of isolates varied according to their ET. Thus, isolates belonging to ET1, ET2 and ET8 were responsible for outbreaks or for @entity281 , whereas isolates of other ETs were responsible for only @entity281 . The temporal distribution of ET1 isolates among hospitals identified seven outbreaks in seven clinical departments.

An epidemiological study of XXXX isolates from @entity580 by enzyme electrophoresis.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5134 :: ('615', 'Species') :: ['Serratia marcescens'] @entity1615 :: ('OMIM:181800', 'Disease') :: ['RSI', 'relatively susceptible isolates'] @entity281 :: ('MESH:D007239', 'Disease') :: ['sporadic infections'] @entity580 :: ('MESH:D003428', 'Disease') :: ['nosocomial infection']
@entity5134 :: (615,Species) :: ['Serratia marcescens']
