How can my husband prevent transmission of Herpes virus 2?he doesnt know i have the virus.Can taking the valacyclovir helps while not using condom helps prevent transmission?Is ther other way to prevent transmission of virus aside from abstaining and using condom?

Even if you aren't having an outbreak their is roughly a 70% chance you have viral shedding (the area of skin that gets sores is still able to transmit the virus even when their is no outbreak) Valtrax + condom is the best combination to prevent transmission. (reduces transmission chances upwards of 90%+ depending on immune system)

P.S. you cant get it from a toilet seat (i know you didnt ask that but im hell bent on debunking that stupid ass myth, I've ran across a couple patients who have been kicked out their home bc their room mates found out and thought they would get it from the toilet, ignorant ass people)