If you live in Eastern Europe, the Middle East, Asia, Africa, or South America, then your chances of the needle being contaminated are greater. Sterile
equipment is
used in some places in those countries, but not always, especially in rural areas.
You said they brought the needle from a tray and then poured alcohol on it. That leads me to believe that the needle was perhaps just sitting on a tray and did not come from a sterilized package.