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How Is STD Transmitted?

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Posted on Wed, 11 Feb 2015
Question: Hello,
How long can stds stay on your mouth/ in your mouth. I gave my boyfriend a blow job then an hour later my son kissed me on the mouth and bit my face/lip. I hadn't washed up yet. I'm not sure what my boyfriends std status is. Is there a risk towards my son catching something in this situation?
doctor
Answered by Dr. Dr. Kakkar (3 hours later)
Brief Answer:
The risk is there if there was contact with saliva coated mucosa..

Detailed Answer:
Hello. Thank you for writing to us at healthcaremagic

I have gone through your query and I have understood it.

I am assuming that you boyfriend had one or the other STD(s).

The risk of transmitting an STD to your son depends on whether there was an exchange of saliva between you and you son Or whether his lips came into contact only with the outer dry part of your lips and skin Or did they also came into contact with the inner wet/ saliva coated part Or saliva.

Theoretically there is a chance if some of the infected secretions mixed with saliva did came into contact with mucosa.

However, most of the infecting organisms like Herpes, HIV, Syphilis etc die quickly if exposed to air (i.e within seconds) i.e they would have lived longer on the outer dry part of lip

The organisms can however survive slightly longer in warm, damp conditions like the oral mucosa Or saliva coated inner lip.

Regards
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Dr. Kakkar (5 hours later)
Do I need to take my son to a doctor? He kissed mainly the putter part of my lip then I wiped us with baby wipes..then he bit my lip and probably got a little saliva then possibly. Is this an hiv risk? My bf has never been tested but plans on it
doctor
Answered by Dr. Dr. Kakkar (3 hours later)
Brief Answer:
I think there is negligible risk if at all

Detailed Answer:
Hi.

Regarding risk of STD from biting your lip the risk is only theoretical and negligible because not a lot of infected salivary secretions, if at all, would have been exchanged between you and your son and therefore very less chance of an STD.

Regarding kissing on the outer part of lip there is no risk as I have mentioned before because most of the microbes responsible for STD would not survive on the outer dry part of lips and surrounding skin, beyond a few seconds.

Regards
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Dr. Kakkar (6 hours later)
So I don't need to take him and do the emergency pep? I called an on call pediatritions and she said that it wouldn't of survived on or in my mouth. I was worried about secretions from my bf somehow still being infectious in my mouth an hour later. I read tho that hiv doesn't survive really in saliva. My son bit my lip and kind of sucked on it for a couple seconds...he had chapped lips and a little sore on the top of his lip....I had chapped lips too that possible could have a little cut I don't remember
doctor
Answered by Dr. Dr. Kakkar (1 hour later)
Brief Answer:
I think that he is safe from Hiv

Detailed Answer:
Hi.

That is what I told you the risk is negligible, if at all. Yes saliva is inhibitory for HIV but not for Hsv Or syphilis.
The risk is less because the exposure would have not have exchanged too much of salivary secretion as in case of more prolonged or deep kissing.
There is no need for PEP.
For HIV to enter the cut should be fresh and actively bleeding. The virus cannot enter through paper thin cuts or cuts on chapped lips which are not actively bleeding Or through cuts that are even a few hours old and thus have formed early scabs.

Regards
Note: Consult a Sexual Diseases Specialist online for further follow up- Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Dr. Kakkar

Dermatologist

Practicing since :2002

Answered : 9612 Questions

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How Is STD Transmitted?

Brief Answer: The risk is there if there was contact with saliva coated mucosa.. Detailed Answer: Hello. Thank you for writing to us at healthcaremagic I have gone through your query and I have understood it. I am assuming that you boyfriend had one or the other STD(s). The risk of transmitting an STD to your son depends on whether there was an exchange of saliva between you and you son Or whether his lips came into contact only with the outer dry part of your lips and skin Or did they also came into contact with the inner wet/ saliva coated part Or saliva. Theoretically there is a chance if some of the infected secretions mixed with saliva did came into contact with mucosa. However, most of the infecting organisms like Herpes, HIV, Syphilis etc die quickly if exposed to air (i.e within seconds) i.e they would have lived longer on the outer dry part of lip The organisms can however survive slightly longer in warm, damp conditions like the oral mucosa Or saliva coated inner lip. Regards