Lymphocytic Choriomeningitis Virus (LCMV), Pneumonia Virus of Mice (PVM), Respiratory Enteric Virus III (REO), Sendai Virus (SEV), SV5 (Simian Parainfluenza Virus), Guinea Pig Adenovirus (GPADV), Parainfluenza-3 (Piv-3), Clostridium Piliforme (CPILI), and Encephalitozoon Cuniculi (ECUN).