Table 1.

Clinical scores of respiratory signs from cats at the time of sample collection.

Clinical score	Clinical signs	Total number of cats*
0 (clinically unaffected)	No respiratory signs and no post-mortem findings	51
1 (upper mild)	Coughing, sneezing, conjunctivitis, or nasal/eye discharge	111
2 (upper severe)	Coughing, sneezing, conjunctivitis, nasal/eye discharge, in addition to ulcers in the mouth, lethargy, depression, inappetence or fever	32
3 (lower, pneumonia)	Pneumonia followed by one or more signs such as dyspnea, lethargy, depression, inappetence or fever	45

*Clinical signs for 316 cases were unknown.