| [characterization by pulsed-field gel electrophoresis of salmonella typhimurium isolates recovered in the acute diarrheal disease surveillance program in colombia, 1997-2004]. | in colombia salmonella typhimurium is the second most frequently isolated salmonella serotype (after s. enteritidis) from human clinical samples. this serotype represents 28.2% (n=468) of the 1659 salmonella isolates recovered by the instituto nacional de salud (ins) acute diarrheal diseases surveillance program from 1997 to 2004. previously, little was known about the molecular attributes of these strains and commonality of genetic subtypes among s. typhimurium isolated from humans in colombia. | 2006 | 17176003 |