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the possibility of contracting hiv through intramuscular injection

I want to know the possibility of contracting hiv through intramuscular injection. I know that aseptic procedures have been adopted in regular hospitals, and it is very rare to reuse needles. But I still worry about the risks, especially in the case of illegal operations by nurses. I read the news before and knew that a doctor in India was sued. So I want to know, under the theoretical conditions, if the nurse reuses the needle and the needle tube and then gives the patient an intramuscular injection, is there a risk of infection? What is the principle? What is the difference between using needles for intravenous drug use? Thank you!
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I'm curious, are you in India?  If India has a problem with illegal operations, obviously all bets are off for everything, but you seem to be saying illegal operations are being performed in hospitals and by nurses, who have no training in performing an operation so why is that a concern?  In a hospital setting, needles are never reused, but again, if you're talking about some criminal enterprise going on that isn't being done in a hospital then again all bets are off on everything, but unless you're a career criminal why would you be getting an operation is that situation?  If this is just an irrational worry, you have an anxiety problem, not an HIV problem.
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Thank you for your reply! I think I do have anxiety disorder and cleanliness addiction. I am not Indian, but I also come from a developing country. In fact, I will go to the CDC for vaccination in a few days. I am worried about the nonstandard operation of nurses, such as reusing needles or contacting medical waste. This has made me very anxious these days, unable to convince myself to settle down. So I would like to ask if there is a risk of infection under the most dangerous situation of intramuscular vaccination. Because every nurse has his own habits, I am very worried about my anxiety because of little things.
Intramuscular injection isn't really a risk - you noted the difference yourself:  intramuscular versus intravenous.  The first is into your muscle.  The second is into a vein.  
Also, vaccinations are almost always delivered in pre-filled syringes, so there is no possibility for re-use.
Thank you, but what's the difference between intramuscular injection and intravenous injection? Why is intravenous injection risky and intramuscular injection not? There are many capillaries under the muscle.
Vaccinations are almost always delivered in pre-filled syringes, so there is no possibility for re-use.
Tell the nurse about your anxiety disorder and cleanliness addiction fears, and ask her to show you the pre-filled syringe. You will not be able to overcome those fears on a chat forum, so tell the nurse that you want to watch what she does, so you can know that you are safe.
Thank you for your reply. In fact, the vaccines I injected need to be extracted on-site, not pre-filled. I watched the nurse's operation carefully, but it was impossible to see the whole process clearly, so I kept worrying. I just want to know if intramuscular injection is theoretically contagious.
Next time tell the nurse about your mental health issue first so she can do you a favor and do everything slow enough and in front of you to prove there is no risk.

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