Is a bruise created by microorganism?

No, a bruise is not created by microorganisms. A bruise is a type of skin injury that occurs when small blood vessels near the skin's surface are damaged, resulting in leakage of blood into the surrounding tissues. It is typically caused by trauma or impact to the skin, such as a fall, collision, or blunt object striking the body. Microorganisms, such as bacteria or viruses, are not directly responsible for the formation of a bruise.