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A VIRUS CAUSING PNEUMONIA IN CATS AND PRODUCING ELEMENTARY BODIES
1Department of Animal and Plant Pathology of The Rockefeller Institute for Medical Research, Princeton, New Jersey.
The Journal of Experimental Medicine
|October 30, 2009
Summary
A contagious feline respiratory disease agent was transmitted to various animals and eggs. This research confirms the disease is caused by a virus forming elementary bodies.
Area of Science:
- Veterinary Virology
- Infectious Diseases
- Microbiology
Background:
- Feline respiratory diseases can be highly contagious.
- Identifying the causative agent is crucial for disease control and treatment.
- Previous studies have not definitively identified the viral agent responsible for this specific cat respiratory illness.
Purpose of the Study:
- To identify and characterize the infectious agent responsible for a contagious respiratory disease in cats.
- To determine the transmission routes and host range of the agent.
- To confirm the etiological basis of the feline respiratory illness.
Main Methods:
- Transmission studies in cats, mice, rabbits, guinea pigs, and hamsters.
- Intranasal inoculation and parenteral injection in cats.
- Agent detection in biological samples (eye/nasal discharge, lung tissue, nasal mucosa).
- Filtration, culture, and microscopy (elementary bodies) of the agent.
- Complement fixation tests for serological confirmation.
Main Results:
- The agent successfully infected cats, mice, rabbits, guinea pigs, and hamsters.
- In cats, intranasal inoculation replicated natural disease symptoms; parenteral injection caused mild fever.
- The agent was consistently found in eye/nasal discharges and lungs of acutely ill cats, and in nasal mucosa for up to two months.
- Microscopy revealed elementary bodies in infected tissues; filtration was generally unsuccessful.
- Complement fixation tests showed positive results with sera from recovered cats.
Conclusions:
- The contagious respiratory disease in cats is caused by a virus.
- The virus forms elementary bodies and can be detected in specific tissues and discharges.
- Experimental transmission and serological data support the viral etiology.
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