In this poll about 10% of the respondents said they think or know they got an STD from a BBBJ:
https://www.eccie.net/showthread.php...&highlight=std
As to DATY, it's very uncommon for STD's to be transmitted from female to male or vice versa, with one huge exception: it is common for HPV to be transmitted via cunnilingus, which can lead to mouth and throat cancer.
As to herpes, from what I've read, if you've had HSV-1 (oral herpes), it's unlikely (but possible) you'll get HSV-2 (genital herpes) from oral sex. The majority of people have had HSV-1.