11. Interferon treatment was evaluated in individuals suffering from herpes simplex virus epithelial keratitis. 12. Other infectious agents include cytomegalovirus, the herpes simplex virus, hyperthermia, toxoplasmosis, and syphilis. 13. Viruses that have been implicated include Epstein-Barr virus, herpes simplex virus and cytomegalovirus. 14. A more common culprit is herpes simplex virus, the cause of cold sores. 15. The herpes simplex 1 genomes can be classified into six clades. 16. Viruses used to date include retrovirus, adenovirus, adeno-associated virus and herpes simplex virus. 17. It is based on the herpes simplex virus ( HSV-1 ). 18. In contrast to the herpes simplex virus, the latency of VZV is poorly understood. 19. Peroxidase-generated hypothiocyanite inhibits herpes simplex virus and human immunodeficiency virus. 20. Those causing latent infection include herpes simplex and varicella-zoster viruses.