[Serovars of Listeria monocytogenes and related species isolated from human clinical specimens].
Using phenotype techniques, characterization was realized of species and serovars of 255 strains of Listeria isolated from human material: 220-86.3% were from patients with possible invasive disease, while 35-13.7% were from colonized healthy individuals. The strains were collected in several regions of Brazil from 1969-2000. In individuals aged 0-10 or 41-60 years old Listeria monocytogenes was isolated more often in cerebral spinal fluid than in blood cultures, including samples from renal transplant recipients. All Listeria monocytogenes serovars were detected in blood culture strains. The predominant serovars characterized were 4b (154-60.3%) and 1/2a (74-29%). In this study, Listeria monocytogenes causing invasive diseases, such as meningitis or septicemia, or colonizing individuals, were identified. Consequently further studies focusing on clinical and pathological as well as epidemiological issues, including risk factors associated with foodborne transmission should be pursued.
Hofer
Ernesto
E
Departamento de Bacteriologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ. hofer@uninet.com.br
Reis
Cristhiane Moura Falavina dos
CM
Hofer
Cristina Barroso
CB
D000293:Adolescent; D000328:Adult; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008089:Listeria monocytogenes / Q000145:classification* / Q000235:genetics; D008088:Listeriosis / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D012189:Retrospective Studies; D013045:Species Specificity