Final answer:
The second concern following a burn after the first 24 hours is the risk of infection. It is important to keep the burn clean and sterile to prevent infection.
Step-by-step explanation:
The second concern following a burn after the first 24 hours is the risk of infection. Burns can create an open wound, which makes it easier for bacteria and other pathogens to enter the body. It is important to keep the burn site clean and sterile to prevent infection. If not properly treated, infections can delay the healing process and lead to more serious complications.