Problem:
A neurotropic virus is a virus which capable of infecting nerve cells.
Herpes simplex virus (HSV) has low neuroinvasivesess and high neurovirulence. HSV is transmitted in vesicle fluid, saliva and vaginal secretions. So the site of infection determines the disease - "mixing and matching of mucous membranes".
Question: Why is herpes virus neurotropic?
Please describe in detail.