hello, im 21 years old girl and my weight s 53kg and height is 157cm before four and half years ive undergone blood grouping test in govt head hospital i am afraid that the needle used by them is sterilised or not , ive dust allergy, running nose and wheezing problem from last 9 years and ive red spot on my chest and back , i can control it only by taking medicines , pls let me know that due to the unsterilized needle any viral infection is in my body or not or any of these symptoms are due to any hiv infection because of using that needle and i heard that hiv virus will not be alive in the needle after after 20 microseconds of injection is this true, please do the needful