Pathology of bovine abortion and newborn calf death caused by dual infection with Chlamydia psittaci and infectious bovine rhinotracheitis virus.

Abstract

Nine aborted fetuses and one newborn calf, diagnosed as Chlamydia psittaci (C. psittaci) infection, were pathologically examined. The characteristic lesions in the liver were focal necrosis in 9 aborted fetuses and granulomatous necrotic foci in the newborn calf. Moderate numbers of intranuclear inclusion bodies were found in necrotic foci of the liver, spleen, thymus, lymph nodes, adrenal gland, kidney, lung and forestomach. Immunohistologically, a small number of C. psittaci antigens was demonstrated in necrotic foci of the liver and correlated with distribution of elementary bodies. Moderate numbers of infectious bovine rhinotracheitis (IBR) virus antigens were also detected in degenerating and necrotizing parenchymal cells in various organs and correlated with distribution of intranuclear inclusion bodies. Thus, these aborted bovine fetuses and newborn calf were interpreted as being dually infected with C. psittaci and IBR virus during pregnancy.

• Authors: H Ogino, K Kaneko, D Nakabayashi, T Watanabe, J Murayama
• Journal: The Journal of veterinary medical science (J Vet Med Sci) Vol. 58 Issue 1 Pg. 67-70 (Jan 1996) ISSN: 0916-7250 [Print] Japan
• PMID: 8645759 (Publication Type: Journal Article)

Chemical References

• Antigens, Bacterial
• Antigens, Viral

Topics

• Abortion, Veterinary (microbiology, pathology, virology)
• Animals
• Animals, Newborn
• Antigens, Bacterial (analysis)
• Antigens, Viral (analysis)
• Cattle
• Cattle Diseases
• Chlamydophila psittaci
• Female
• Infectious Bovine Rhinotracheitis (complications, pathology)
• Necrosis
• Pregnancy
• Psittacosis (complications, pathology, veterinary)