Viruses: Mouse Hepatitis Virus (MHV), Mouse Minute Virus (MMV), Mouse Parvovirus (MPV), Murine Norovirus (MNV), Rotavirus/Epizootic Diarrhea of Infant Mice (EDIM) and Theiler’s Mouse Encephalomyelitis Virus (TMEV/GDVII). Bacteria and Fungi: Helicobacter (HELICO), Rodentibacter pneumotropica (RPNEU), Streptococcus B Hemolytic Group A (STRGA), Streptococcus B Hemolytic Group B (STRGB), Streptococcus B Hemolytic Group C (STRGC), Streptococcus B Hemolytic Group G (STRGG), and Streptococcus pneumoniae (SPNE). Parasites: Fur mites (FUR), Giardia muris (GMUR), Spironucleus muris (SMUR), Cryptosporidium spp. (CRYP), Pinworm (PIN), and ntamoeba muris (EMUR).