Copyright C 1996, American Society for Microbiology Vol. 70, No. 6 Oral Inoculation with Herpes Simplex Virus Type 1 Infects Enteric Neurons and Mucosal Nerve Fibers within the Gastrointestinal Tract in Mice R. M. OESSER,12* AND S. C. KOOI Division of Allergy, Itnnuutology. and Infectious Diseases, The Children'