People who know blood?

If there is dried up blood on something how long does it appropriate for it not to be dangerous. I guess close to not to catch hiv or somethingPeople who know blood?
All blood, whether dried or fresh, should be considered potentially infectious. The CDC (Center for Disease Control) states that on environmental surfaces at room warmth:
1. Hepatitis B can live for up to 7 days.
2. Hepatitis C viruses can live for 16 hours to 4 days.
3. HIV "does not survive well" outside the body. In the lab, the virus have been shown to dampen 90-99% after several hours of drying on a surface. No known cases of HIV hold been spread through dried blood.
umm i dont have a sneaking suspicion that thats how you get hiv
You cannot carry HIV from dried blood. HIV will not live outside the body for more than a few minutes.
I remember reading somewhere that HIV can live in dried blood for a week but I don't know for sure if specifically true. However it wouldn't be likely that you could capture anything from this. It would have to enter you body through an open out cut or something and it wouldn't transmit if it was dried. There would enjoy to be a lot of factor involved. I don't think you hold anything to worry roughly.
That depends entirely on WHAT the blood might be infected with.
BEST performance is to wash the blood out of or stale of the item as soon as possible. If not possible use a strong 'disinfectant' on the surface.