Which of the following is a common symptom of an infection?

Fever is a common symptom of an infection and is often one of the body's first responses to fighting off an invading pathogen. When the body detects an infection, the immune system activates and can cause an increase in body temperature, leading to fever. This response serves several purposes: it can slow the replication of some pathogens, enhance the effectiveness of white blood cells, and signal the body to prioritize healing.

In the context of infections, fever can be a key indicator of an underlying issue, helping healthcare practitioners to diagnose infections and guide treatment. Recognizing a fever can prompt further evaluation and monitoring, which is crucial in managing any potential threat to health effectively.