[Salmonella serotypes identified in Mexican health services].
OBJECTIVE
To identify the different Salmonella strain serotypes isolated at public and private laboratories in Mexico and at the Institute for Epidemiologic Diagnosis and Referral (InDRE).


METHODS
A total of 24,394 Salmonella strains collected from 1972 to 1999 in public and private health laboratories of Mexico were analyzed with the Kauffmann-White method, using antisera produced by InDRE, according to Centers for Disease Control and Prevention (CDC, Atlanta, GA) standards; 15,843 (64.9%) samples were from human sources and 8,551 (35.1%) from non-human sources.


RESULTS
One hundred ninety nine different serotypes were identified. The most frequent serotype in human beings was S. Typhimurium (20.4%), followed by S. Enteritidis (18.3%). In the past few years, the frequency of S. Enteritidis has been increasing, surpassing that of S. Typhimurium since 1991. Presently S. Enteritidis is the most frequently isolated serotype. In non-human sources, S. Derby (13.8%) and S. Anatum (8.5%) are the most frequent strains.


CONCLUSIONS
Salmonella serotypes most frequently isolated in Mexico are: S. Typhimurium, S. Enteritidis, S. Derby, S. Agona y S. Anatum. From the epidemiologic standpoint, it is necessary to identify circulating and emerging Salmonella serotypes in order to target pertinent preventative interventions.
Gutiérrez-Cogco
L
L
Laboratorio de Bacteriología Entérica, Departamento de Bacteriología, Instituto de Diagnóstico y Referencia Epidemiológicos, México. lgutierrez@mail.ssa.gob.mx
Montiel-Vázquez
E
E
Aguilera-Pérez
P
P
González-Andrade
M C
MC
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D012189:Retrospective Studies; D012475:Salmonella / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D012480:Salmonella Infections / Q000453:epidemiology / Q000382:microbiology*; D012481:Salmonella Infections, Animal / Q000453:epidemiology / Q000382:microbiology*; D012477:Salmonella enteritidis / Q000302:isolation & purification; D012703:Serotyping
Serotipos de Salmonella identificados en los servicios de salud de México.