“…Despite the widespread use of antiviral therapy in the past 20 years, the incidence of infection and complications caused by HSV-2 remain almost intact (Xu et al, 2006;Morris et al, 2008). Daily antiviral therapy has been shown to reduce genital injury (Mertz et al, 1988;Reitano et al, 1998) and to suppress the detection of HSV on the genital mucosa surface (Wald et al, 1996;Gupta et al, 2004). However, daily intake of acyclovir could only reduce the chance of sexually transmitted disease contamination by 48% (Corey et al, 2004).…”