Can You Get STDs from Playing Catch with an Infected Friend? - Urology

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Sexually transmitted infections (STIs) issues?


Hello doctor, thank you for taking the time to answer my question! I would like to ask: I am a male, and I have a male friend who has a quite active sex life.
Assuming he has all sexually transmitted infections (STIs) and other bloodborne diseases, I am concerned that if we are playing baseball and he happens to have cuts, wounds, or bleeding on his hands, and I catch the ball and then throw it back with my other hand, will I be at risk of contracting any STIs or other bloodborne diseases? Thank you!

Niming, 20~29 year old female. Ask Date: 2019/05/10

Dr. Du Shixi reply Urology


Hello: If you have a cut and come into contact with the bodily fluids of someone who has a sexually transmitted infection, there is a possibility of transmission.
However, if the amount of fluid is small, the risk is minimal.
Wishing you good health.

Reply Date: 2019/05/10

More Info


When it comes to the transmission of sexually transmitted diseases (STDs) and bloodborne pathogens, the scenario you described—playing catch with a friend who may have open wounds—raises some valid concerns. However, the risk of contracting STDs or bloodborne infections in this context is extremely low.

Firstly, STDs, including HIV, are primarily transmitted through specific routes: unprotected sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding. The transmission of these pathogens typically requires direct access to the bloodstream or mucous membranes, which is not likely to occur during casual activities like playing catch.

In your scenario, if your friend has an open wound or is bleeding, and you handle a baseball that has come into contact with his blood, the risk of infection is still minimal. Here are a few key points to consider:
1. Survival of Pathogens Outside the Body: Most pathogens, including HIV, do not survive long outside the human body. HIV, for example, becomes inactive within minutes once exposed to air. Therefore, even if there were traces of blood on the ball, the likelihood of the virus being viable enough to cause infection by the time you handle it is extremely low.

2. Nature of Contact: The act of playing catch does not involve direct contact with bodily fluids in a way that would facilitate transmission. Unless you have an open wound that directly contacts your friend's blood, the risk remains negligible.

3. Injury and Blood Exposure: If you were to sustain an injury while playing and your wound were to come into contact with your friend's blood, there might be a theoretical risk. However, this scenario is still quite unlikely to lead to transmission of STDs. For example, the risk of HIV transmission through contact with blood is significantly lower than through sexual contact.

4. General Hygiene Practices: It’s always a good idea to practice good hygiene, especially if you are aware that someone has an open wound. Washing your hands after handling sports equipment and avoiding contact with blood can further reduce any potential risk.

5. Consulting Healthcare Professionals: If you are particularly concerned about potential exposure to STDs or bloodborne pathogens, it is advisable to consult with a healthcare professional. They can provide personalized advice and, if necessary, recommend testing based on your specific circumstances.

In summary, while it is understandable to have concerns about potential exposure to infections, the risk of contracting STDs or bloodborne diseases from playing catch with a friend who may have an open wound is extremely low. Maintaining good hygiene and being aware of the transmission routes of these diseases can help alleviate your worries. If you have further concerns or experience any symptoms, seeking medical advice is always a prudent step.

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