Which of the following is NOT a sign of infection?

Translucent nails are not typically a sign of infection. Signs of infection generally include pain, swelling, and pus, which are all indicators of inflammation and the body's response to pathogens. In contrast, translucent nails can be a characteristic of healthy nails or may indicate other non-infectious conditions, such as nutritional deficiencies or systemic issues. As a result, while the other choices clearly align with symptoms common to infections, translucent nails do not fall within this category, making them the correct option in this context. Understanding the distinction between these signs is important in assessing the presence of infection and making appropriate treatments or referrals.