Mono: Infectious Mononucleosis (the Kissing Disease) is cause by a virus known as Epstein-Barr Virus (EBV). 95% of adult Americans age 40 and older have already been exposed.
Hepatitis A: It is estimated that nearly 80% of Americans age 60 and older have been exposed to Hepatitis A at some point in there lives, and may have never become aware of their infection.
HPV: Human Papillomavirus occurs in about 50% of sexually active males and 75% of sexually active females, many infections go unnoticed.
http://www.plannedparenthood.org/
http://www.cdc.gov/
http://your-doctor.com/healthinfocenter/medical-conditions/infectiousdisease/hepatitis.html
