Hello. Welcome to Ask The Doctor.
I understand your concern.
Mycoplasma urethrae and Ureaplasma species are common commensal inhabitants of the lower genitourinary tract in adolescents and adult men and women who are sexually active. The organisms can be transmitted venereally and vertically from mother to offspring. So if we talk about an adult male then yes it is sexually transmitted. But in cases of newborn it can be transmitted through the genital tract of the mother.
In fact, we should not use the term Sexually transmitted disease for these Infections. The reason is that they are present normally in about 70% of Sexually active people. However, in few people the disbalance occurs and the infection grows excessively leading to symptoms like urethral discharge, lower abdominal pain.
So following are your answers in clear words:
1. No, they are not only transmitted by genital fluids. They can also be transmitted through genital skin to skin contact.
2. No, they are not always Sexually transmitted as they can also be transmitted from mother to child during birth.
I hope I am able to answer your query.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.