CYP19A1 and coinfection: Conversely, data from animal rescue centers showed a significantly higher incidence of CPVs, with CPV1 found in 32 out of 51 samples (62.74%), CPV2 seen in 14 out of 51 cases (27.45%), and their co-infections present in 5 samples (9.80%), indicating a high prevalence of CPV in this environment.