Ahem. The web doesn't seem to rate any searches for the acronym 'VD' very highly, which tells me that a US audience might not be used to them (preferring 'STI' or 'STD') in this context. As a USA citizen, if you read the initials 'VD' would you think straight away of venereal disease, or something else (or nothing at all)?

Thank you for your time - your answers will sway the course of a story.