| risk-based analysis of the danish pork salmonella program: past and future. | the danish pork salmonella control program was initiated in 1993 in response to a prominent pork-related outbreak in copenhagen. it involved improved efforts at slaughter hygiene (postharvest) and on-farm (preharvest) surveillance and control. after 10 years, 95 million euros, significant reductions in seropositive herds, salmonella positive carcasses, and pork-attributable human cases (pahc), questions have arisen about how best to continue this program. the objective of this study was to provi ... | 2008 | 18419653 |
| molecular evidence for the infection of zoo chimpanzees by pig ascaris. | we here describe the transmission of the pig roundworm, ascaris suum to chimpanzees maintained in the copenhagen zoo, denmark. using a technique for whole genome fingerprinting, amplified fragment length polymorphism (aflp) and the technique pcr restricted fragment length polymorphism (pcr-rflp) of the internal transcribed spacer region (its) of the nuclear ribosomal dna, the worms from the chimpanzees were compared with ascaris spp obtained from humans and pigs in order to identify the source o ... | 2006 | 16567044 |
| investigation of an outbreak of human salmonellosis caused by salmonella enterica ssp. enterica serovar infantis by use of pulsed field gel electrophoresis. | analysis of chromosomal dna restriction patterns produced by pulsed field gel electrophoresis (pfge) was used to investigate an outbreak of human salmonellosis caused by salmonella enterica ssp. enterica serovar infantis (s. infantis) involving more than 500 registered human cases. the outbreak had been tentatively traced back to a single pig slaughterhouse. a total of 135 isolates from various sources produced 21 different pfge patterns with the restriction endonuclease xbai. all human isolates ... | 1996 | 8880333 |