There have been a number of reports of clients catching infections.  All have been mentioned on forums at some stage, and later removed. Someone reportedly caught Hepatitis from an escort with a jagged tooth. Other reports have mentioned gonorrhoea.

WE WOULD NOT WANT ANY OF OUR FRIENDS TO FACE THIS WORRY. It is all very well thinking "I'll take the risk".... but will you think that afterwards. On the way home ?  The next day ?    AN ESCORT WHO OFFERS OWO IS ONLY AS SAFE AS THE LAST PERSON SHE GAVE IT TO.

This is taken from the NHS web site -

Oral sex is the stimulation of the genitals using the mouth and tongue. It is one of the ways that sexually transmitted infections (STIs) are most frequently passed on. You can catch a STI if you have just one sexual partner, but the chance of catching an infection increases the more partners you have.

STIs that are commonly caught through oral sex are:

Infections that are less frequently passed on through oral sex include:

• HIV
• hepatitis A, hepatitis B, and hepatitis C
• genital warts
• pubic lice

Symptoms of STIs

The symptoms of an STI vary depending on the type of infection. However, most STIs are treatable if detected early enough, so if you suspect that you may have an infection, it is important to visit your local family planning clinic, or genito-urinary medicine (GUM) clinic, as soon as possible.

If left untreated, STIs are not only uncomfortable and embarrassing, but they can seriously affect your health and fertility.

Preventing STIs

You can prevent catching STIs during oral sex by making sure that you, or your partner, wears a condom.

This was copied (with slight alterations) from a forum relating to Sheffield -