A wound infection occurs when bacteria enter the body through a break in the skin, such as cuts, scrapes, or surgical incisions. This can lead to symptoms like redness, swelling, warmth, and pus at the site of the wound. If left untreated, the infection can spread and cause more serious health issues. Preventing wound infections involves proper cleaning and care of the wound. It's important to keep the area clean and covered, and to seek medical attention if signs of infection develop. In some cases, antibiotics may be necessary to treat the infection and promote healing.