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Attempted eradication of salmonellosis from a colony of short-tail grey opossums (Monodelphis domestica)

Prior to re-housing a colony of laboratory short-tail grey opossums, the animals were found to harbour salmonella. This paper describes an unsuccessful attempt to eradicate the infection from the colony by means of antibiotic treatment and hygienic measures. A pilot treatment of five animals which received enrofloxacin 10 mg/kg for 5 days appeared to be successful in that no salmonellae were recovered from faeces or organs sampled after treatment. The process was repeated on the whole colony prior to a change of accommodation but 2 animals were found to be still infected, 5 weeks after cessation of treatment.