Hello guys,

Thank you for your philantrophic activity right here.You are helping a lot of people to care about their health.

I wanted to ask you a couple of questionsabout a situation

I was drinking coffee with my friend and we both had little bleeding cuts on our mouths.We were very close to each other and I could sense her breath to my face ( no direct local contact)

1.Is there a chance for an infection to occur by blood coming to each other's wounds

2.If there is not why so , it is said that in air virus becomes non transmittable but why so , I heard that need 1 minute to die. Which statement is true? Not transmittable immediately , or within 1 minute

3.Once there are a bleeding wound(even small) there is an entry point for the blood to come into the blood, right?

I know well of the transmission equation and the saliva inhibition factor, but it does not say in percentages, what low risk is.

4.If this is a low risk stuation do I have to go for hiv test? I live in not very well developed country and it requres time and money to arrange that(yes, these countries still exist ), so it is really important for me to know what to do

5. Is PEP recommended in situations like this

Thanks in advance for adressing all my questions and for the explanation, thanks


Thank you for your inquiry. From what we gather from the question, you were asking about the potential for HIV transmission from an individual's blood into your own wound. From the information given, this scenario is determined to be of Negligible Risk (There is no evidence or no documented cases of transmission. However, there is a theoretical possibility of transmission under certain extenuating circumstances).

It seems you want clarification on whether HIV is transmittable once exposed to air. We are glad to provide some information.

It is correct to say HIV dies once exposed to the air is not transmittable. HIV is a very weak virus and it needs to be in a controlled environment in order to survive. Once HIV is exposed to the air it dies within an extremely short time. As for the precise time when the virus becomes inactivated cannot be given as several variables must be evaluated including, viral content of the fluid, pH of the environment, temperature, etc. If the bodily fluid in question (blood) is exposed to the open environment where there is oxygen it would become inactivated before transmission could occur. Superficial cuts do not provide direct access to the bloodstream that is necessary for the transmission for the virus. Keep in mind, the act of kissing (Direct contact) when two individuals have superficial wounds would be considered a Low Risk activity. Low risk activities warrant HIV testing as this is the only way to be sure if transmission has occurred. In your situation, HIV cannot be transmitted through a superficial cut because for transmission to occur the virus needs direct access to your bloodstream in a tightly sealed environment where no oxygen can interact with the virus. Superficial or small cuts do not provide enough access to the bloodstream, so they do not pose a risk in HIV transmission.

Recommendation: There are no evidence or no documented cases of transmission. Refer to a healthcare professional for more personalized answers.

Best regards,

AIDS Vancouver Helpline/Online, Jason


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