transmission are if you do nothing (other than avoid sex when there is an outbreak) 8-10 females out of a 100 will get herpes in a year, or 8-10%. If you do go on a suppressive therapy then it drops to 4-5 females out of a 100 in a year or 4-5%, and if you use suppressive therapy and a condom the chances are 2-3 females out of a 100 will get herpes in one year, or 2-3%.
The Valtrex and transmission study stats are based on having sex 2 times/week.