analysis of epidemiologic markers of nosocomial serratia marcescens isolates with special reference to the grimont biotyping system.seventy-one strains of serratia marcescens obtained from hospitalized patients of the instituto nacional de la nutricion in mexico city and two virginia hospitals (university of virginia medical center and norfolk general hospital) were analyzed to find markers useful for the epidemiologic investigation of outbreaks with this organism. biotyping with commercial microwell systems (api 20# system [analytab products, plainview, n.y.] and dms rapid nft [dms laboratories, inc., flemington, n.j.]) was ...19863517048
epidemic of serratia marcescens bacteremia and meningitis in a neonatal unit in mexico city.a case-control study was conducted on an epidemic of bacteremia and meningitis caused by serratia marcescens in the neonatal intensive care unit and special care nursery of a general hospital in mexico city, mexico. a 19.9% incidence of bacteremia and meningitis was recorded in contrast to 1.4% and 3.7% during preepidemic and post-epidemic periods; a 69% mortality rate was observed. peripheral iv catheters and the use of mixed iv fluids prepared in the wards were the major risk factors (p less t ...19892643660
partial characterization of serratia marcescens nosocomial strains.a nosocomial infection outbreak occurred in the intensive care unit (icu) of the instituto nacional de pediatría (inp) in méxico city, during the months of march, april and may in 1988 serratia marcescens was isolated as the etiological agent for this epidemic. up to date, the source of contamination, the spreading and the pathogenic mechanisms which were involved in this outbreak remain unknown. in order to study the dynamics of the bacterial population involved in this outbreak, all strains of ...19911844112
biotyping of serratia marcescens strains of clinical hundred and ninety five serratia marcescens strains of clinical origin isolated at the children's hospital of mexico (hospital infantil de méxico) in 1978 and at the national institute of pediatrics (instituto nacional de pediatría) in mexico city in 1977 and from 1988 to 1989, were studied and compared. all strains were identified using the biotyping system described by grimont and grimont, without modification. the most numerous biogroup found was a5/8, and the frequencies of isolation of ...19921345114
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