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Infect Immun. 1983 August; 41(2): 789-794

Isolation of Chlamydia psittaci from naturally infected African clawed frogs (Xenopus laevis).

B W Wilcke Jr, C E Newcomer, M R Anver, J L Simmons and G W Nace

ABSTRACT

An inclusion-forming agent was isolated from the livers of commercially raised African clawed frogs (Xenopus laevis) involved in an epizootic of high morbidity and mortality. Original isolation was made in McCoy cells. This agent was identified as Chlamydia psittaci based on the formation of typical intracytoplasmic inclusions which developed within 48 h, were not stained by iodine, and were resistant to sulfadiazine. The isolate from one particular frog (designated as strain 178) was further studied and found to be lethal for 7-day-old embryonated chicken eggs after intra-yolk sac inoculation. This strain was demonstrated not to be pathogenic for mice when inoculated intraperitoneally. The cell culture isolate of C. psittaci was transmitted to uninfected X. laevis, causing disease and death.

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Infect Immun. 1983 August; 41(2): 789-794

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