Application of variable number of tandem repeats typing to describe familial outbreaks of brucellosis in Argentina.
Consumption of inadequately pasteurized dairy products is the most common means of transmission of brucellosis. This report describes two foodborne outbreaks that occurred in families infected after consumption of fresh home-made cheese bought in different Argentine provinces. High resolution variable number of tandem repeats (VNTR)-based analysis revealed two well-defined groups comprising essentially identical profiles and corresponding to the two different outbreaks. Similar clinical findings in members of the same family could indicate that the differential virulence of different bacterial clones, as indicated by VNTR data, could have influenced the course of the disease. We observed the importance of adequate treatment in early stages of the disease; combination therapy and extended treatment for 6 weeks or longer yielded significantly better results. The risk of the foodborne transmission of this zoonotic disease and disease prevention should be considered.
Lucero
Nidia E
NE
Brucellosis Laboratory, National Laboratories and Institutes of Health Administration (ANLIS) 'Dr C. G. Malbrán', Avenida Velez Sarsfield 563, 1281 Buenos Aires, Argentina.
Tenenbaum
Marina
M
Department of Infectology, Pediatric Hospital 'Dr Ricardo Gutierrez', Gallo 1330, 1425 Buenos Aires, Argentina.
Jacob
Nestor R
NR
Department of Infectology, Hospital 'Dr Cosme Argerich', Margall 750, 1155 Buenos Aires, Argentina.
Escobar
Gabriela I
GI
Brucellosis Laboratory, National Laboratories and Institutes of Health Administration (ANLIS) 'Dr C. G. Malbrán', Avenida Velez Sarsfield 563, 1281 Buenos Aires, Argentina.
Groussaud
Pauline
P
Brucellosis Reference Unit, Department of Statutory and Exotic Bacterial Diseases, Veterinary Laboratories Agency, Woodham Lane, Addlestone, Surrey, UK.
Whatmore
Adrian M
AM
Brucellosis Reference Unit, Department of Statutory and Exotic Bacterial Diseases, Veterinary Laboratories Agency, Woodham Lane, Addlestone, Surrey, UK.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D001118:Argentina / Q000453:epidemiology; D015373:Bacterial Typing Techniques; D017347:Brucella melitensis / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D002006:Brucellosis / Q000453:epidemiology* / Q000382:microbiology / Q000473:pathology; D002648:Child; D016000:Cluster Analysis; D016172:DNA Fingerprinting; D004196:Disease Outbreaks; D005192:Family Health; D005260:Female; D005517:Foodborne Diseases / Q000453:epidemiology; D005838:Genotype; D006801:Humans; D008297:Male; D018598:Minisatellite Repeats; D055815:Young Adult