Hello E-I

Does anyone have a paranoia or excessive fear over catching or transmitting something to an escort that prevented them from performing some favs? I know that excessive caution is required for this line of business but for me, having a medical background which feeds my paranoia, know that even kissing possesses the possibilities to transmit many diseases. So in regards to kissing and oral sex for example, how does the client/ escort know that their mouths are free from organisms of Herpes, HPV, Syphilis, ect. Should first timers get tested before their first visit? And what about HPV for which there's no viable test?

Thanks guys.