Virus: Mouse Hepatitis Virus (MHV), Mouse Minute Virus (MMV), Mouse Parvovirus (MPV), Murine Norovirus (MNV), Theiler’s Mouse Encephalomyelitis Virus (TMEV/GDVII), Rotavirus/Epizootic Diarrhea of Infant Mice (EDIM). Bacteria: Helicobacter (HELICO), Rodentibacter pneumotropica (RPNEU),and Rodentibacter heylii (RHEYL). Parasites: Fur mites (FUR) and Pinworm (PIN).