Traumatic events usually happen quickly and chaotically. A near-miss experience occurs when you are involved in a traumatic event where you think you will die or be badly hurt, but are not. This can have a deep psychological impact, sometimes with lasting effects
A needlestick injury means the skin is accidentally punctured by a used needle. Diseases that could be transmitted by a needle or needlestick injury include human immunodeficiency virus (HIV), hepatitis B and hepatitis C.