I guess they could stay off the media so that they can refrain from sex and not get any problems. They could also know what happens if you do have unprotected sex. They should know about STD's and HIV's and they could get pregnant.
Totally incorrect. Some pathogens and microorganisms that is blood-borne can transfer itself from one individual to another by blood and fluid contact. This is a much stronger affinity for the pathogen to spread from the host to the person transferred to.