Virus: Rat Coronavirus (SDAV/RCV), Rat Minute Virus (RMV), Rat Parvovirus (RPV), Toolan’s H-1 Parvovirus (H-1), Kilham Rat Virus (KRV), and Rat Theilovirus (RTV). Bacteria: Helicobacter (HELICO), Rodentibacter pneumotropica (RPNEU), and Rodentibacter heylii (RHEYL). Parasites: Fur mites (FUR) and Pinworm (PIN).