Table 2. Prevalence of alternative mutations in feline infectious peritonitis virus spike protein of cats with wet and dry forms of FIP*.

Mutation	Pathologic form of FIP
	Wet	Dry
M1058L	71	46
S1060A	5	1
No mutation	3	3
Total	79	50

*Cats were diagnosed with the dry or wet form of FIP (feline infectious peritonitis) during postmortem examination by a veterinary pathologist. The occurrence and nature of the mutation in the spike gene was established by sequencing.