The viral genomic copy number results are shown in Figure 4D. There was no difference in the copy number of viral genomic DNA between the DNAJA4 overexpression group and the negative control group at 1 h, 3 h, and 6 h after CGSIV infection, indicating that EPC DNAJA4 overexpression did not promote CGSIV DNA replication at the early stage of virus infection. Here, DNAJA4 is linked to viral infectious disease.