What is the risk of contracting hpv-positive oropharyngeal cancer from someone? Does anyone know?

Increasing. In the past 20 years, hpv went from being present in 16% of oral cancers to over 75%. This is likely due to earlier onset of sexual activity, having more sexual partners, and the misconception that oral sex is "safe". The majority of the oral cancers are caused by high risk hpv type 16. Getting one of the two vaccines currently available between the age of 9-26 will reduce this in the future.
HPV biology. And disease information is growing rapidly. It is very easy to acquire infection, kissing is a prime route, as well as oro-genital contact. However, many are infected; few develop cancer. The virus clears after a solitary exposure. However, few have 1 exposure.
Risk varies. Your risk increases when you don't take precautions. If you are sexually active, have multiple partners and don't use condoms your risk will obviously be greater. Your best defense is to eliminate risky behavior and get tested to make sure you are negative for hpv antibodies. Once confirmed then you may want to look into getting vaccinated.

Related Questions

What is the risk of contracting hpv-positive oropharyngeal cancer from someone during oral sex?

HPV infection. One does not contact oral cancer through oral sex. Hpv infection may occur due to oral sex and that infection may lead to cancer, later on. Read more...
Risk for HPV. The risk for contracting hpv infection during oral sex is high if your partner is known to be hpv +. There is a strong relationship between hpv infection with increased risk of developing certain cancer including oropharyngeal cancer and cervical cancer over period of time. Thus, a safe sex habit, hpv vaccination, papsmear screening are recommended and f/u with your doctor. Read more...

Is there a substantial risk of contracting hpv-positive oropharyngeal cancer from someone?

Very hot topic. The infectivity of oral hpv is very high, and despite salacaious thoughts to the contrary, the most efficient way is osculation (kissing). While infectivity is high, carcinogenesis is quite low. So, many are infected very few develop cancers. The same is true for oro-genital/ano-genital transmission. Read more...
We don't know. It has only been fairly recently that we have had good evidence for a link between hpv infection in the oral pharyngeal area and cancer. It is unclear what the real risk is and whether contact with someone with either hpv or hpv-associated cancer can lead to transmission. Read more...

Whats the difference between symptoms for strep throat and Oropharyngeal cancer from hpv? Can your immune system fight off all hpv after 1-2 yrs?

No symptoms from HPV. Pharyngeal cancer due to HPV is thousands of times rarer than strep throat. It doens't occur at age 21, rarely shows up before 50. Oral HPV and throat cancer cause no symptoms -- no pain, no sore throat, nothing; so strep symptoms are never HPV. And yes: the immune system usually cures HPV, either genital or oral, within 1-2 years. Most important: if not yet vaccinated against HPV, do it now. Read more...