From: Evaluation of feline heartworm disease based on gross necropsy, serology, pulmonary histopathology, and radiographic evidence in adult shelter cats in northeastern Alabama
Heartworm serology status
All cats (n = 50)
> 50%
HW Ab−/HW Ag−
26/50 (52%)
11/26 (42.3%)
HW Ab+/HW Ag−
14/50 (28%)
8/14 (57.1%)
HW Ab+/HW Ag+
8/50 (20%)
8/8 (100%)
HW Ab−/HW Ag+
2/50 (4%)
1/2 (50%)