Acquisition of concomitant oral and genital infection with herpes simplex virus type 2.

Primary oral and genital infections caused by herpes simplex virus type 2 were diagnosed in an 18-year-old female. A history of sexual practices was critical in determining the anatomic sites of infection. Restriction endonuclease analysis of viral DNAs helped to identify the male sexual partner from whom the virus had been acquired. He had been infected recently by a previous sexual partner but had not yet developed lesions. Clinicians should obtain a history of sexual practices from patients with newly acquired genital herpes and should advise patients with genital herpes that transmission of virus to sexual partners can occur in the absence of overt lesions.