From: Comparison of the geographical distribution of feline immunodeficiency virus and feline leukemia virus infections in the United States of America (2000–2011)
Cluster Type
Inside cluster
Outside cluster
Cluster radius (kms)
p-value
Number of states
Mean PMR
FIV
24
1.03
25
0.35
1688.96
0.02
FeLV
7
0.14
42
0.95
1127.96
0.002