Molecular detection of canine viral infectious diseases in China: an investigation from 2018 to 2024

To analyze the prevalence of canine viral diseases in China, including canine parvovirus type 2 (CPV-2), canine coronavirus (CCoV), canine distemper virus (CDV), canine herpesvirus type 1 (CHV-1), canine parainfluenza virus (CPIV), canine influenza virus (CIV), canine respiratory coronavirus (CRCoV), canine adenovirus 2 (CAV-2), canine adenovirus 1 (CAV-1), and canine rotavirus (CRV), a total of 2,492 samples from dogs in 22 provinces were tested between 2018 and 2024. The results showed that 1,236 dogs (49.6%) tested positive for one or more pathogens, CPV-2 (30.6%) being the most commonly detected, with CPV-2c being the most common genotype. The prevalence of CPV-2, CCoV, CDV, and CHV-1 varied significantly depending on the season, geographical location, and age, with young dogs (