[Question #4760] Risk assesment

28 months ago
Dear Doctor 

I hope you are doing good. Here is my story. I have stopped smoking cigarettes and bought an electronic cigarette. I am using it since 2 - 3 months 
When I meet with my best friend who is a smoker he always share with me my e-cigarette
Now I am worried if this guy can pass me HIV knowing that my lips with this cold have some sores. sometimes I have few drops of blood coming out from them. What if he had the same lips as mine? blood on the e-cigarette and then coming to my lips?


I am asking this question because this guy have from time to time unprotected sex with other girls 
My last check up has been done 2 months ago and all is negative 


Thanks again for your help 
H. Hunter Handsfield, MD
H. Hunter Handsfield, MD
28 months ago
Welcome back to the forum and happy new year! Thanks for your question.

However, this is the third question you have asked about nonsexual transmission of HIV or other STDs. The main points from your two previous questions -- one answered by me and the other by Dr. Hook -- is that STDs and HIV are not transmitted without sex or direct sharing of blood. There has never been a case of HIV transmitted by sharing e-cigarets, drinking glasses, or any other oral contact. Even kissing never transmits HIV. Exposure to saliva is riskf ree; in fact, saliva kills HIV.

The main infection risk from sharing e-cigarets or other oral exposures is for common colds, influenza, etc. Therefore, sharing such things with other persons is never wise and I would suggest you not do it, even if your friends don't have obvious colds and otherwise seem well. But even if they have HIV or oral STDs, there is no risk of catching those conditions.

Here is all you need to avoid HIV:  Do not have unsafe sex with new or high risk partners; and do not share needles or other drug injection equipment with other persons. That's all. There should never be a need again to ask about other kinds of contact:  our replies will always be the same!

I hope this information is helpful. Let me know if anything isn't clear.

HHH, MD 
---
28 months ago
Dear Doctor 

Happy new year and best wishes for 2019 

Indeed I am worried with my non sexual exposures because my only sexual exposure is with my wife since 6 years and both of us are loyal and tested negative. 

Well I am not worried to be exposed to Saliva indeed. This never makes me worried. But I am worried if his lips were also damaged and had some blood coming out. This blood can be fixed to the e-cigaret. When used right away by myself I can maybe be in touch with his blood through my damaged lips. 
Can you confirm that even with this hypothesis virus can not enter the bloodstream? 

I know this story is kind of a movie story but this is what my brain is telling me :) 

Thanks a lot for your highly appreciated support. This forum helps a lot of anxious people going through irrational fears 

H. Hunter Handsfield, MD
H. Hunter Handsfield, MD
28 months ago
Yes, I can confirm no risk even if there was blood on the e-cigaret.

Thanks for the thanks. I'm glad to have helped. However, all we can do is provide scientific facts and judgment. How our advice is used -- and whether it helps when the questioner is over-anxious etc -- is up to you!
---
27 months ago
Dear Doctor

I am back again. I went through a very bad tonsilitis and was asked by my MD to make a general blood screening. I asked the lab to make an hiv blood test. I received the results today and they performed an HIV duo quick test. Result is negative with an indice of 0.10. Limit of detection is 0.25

I am always used to go to this lab and they provide also the history of the results. My previous tests results for hiv were 0,03; 0,05; 0,07; 0,08 and now 0,10

How can we interprete these values? Does it mean something to see them grow everytime? I know it is my last question

Is the biomerieux hiv duo a good and reliable test? 

Can I consider myself negative and don’t think again about hiv? 

Thanks again
H. Hunter Handsfield, MD
H. Hunter Handsfield, MD
27 months ago
The numerical results of your tests all are equally negative. The way to "interpret" these values is that every number below the positive cut-off (usually 0.90) is truly and completely negative. In fact, the very same blood specimen tested 10 times would give 10 different numbers, which might vary anywhere beteween 0.10 and 0.89. These numbers do not indicate there are small amounts of HIV antibody present; all mean there is zero HIV antibody in the specimen.

All HIV tests on the market have had to go through strict research and quality control, followed by approval of the Food and Drug Administration (or FDA's equivalent in countries other than the US), otherwise the test cannot be legally provided by labotatories. BioMerieux meets these standards and is highly reliable, no matter what lab or in what country.

In closing, please note the forum does not permit repeated questions on the same topic or exposure. This being your third, it will have to be your last; future new questions about this type of exposure, testing, and your fears about HIV may receive no reply and the posting fee will not be refunded. This policy is based on compassion, not criticism, and is intended to reduce temptations to keep paying for questions with obvious answers. In addition, experience shows that continued answers tend to prolong users' anxieties rather than reducing them. Finally, such questions have little educational value for other users, one of the forum's main purposes. Thanks for your understanding. 

Best wishes and stay safe.

---