Is an infection most often accompanied by leukocytosis?

Yes, infections are often accompanied by leukocytosis, which is an increase in white blood cell (WBC) count. This response occurs as the body mobilizes its immune system to fight off pathogens. However, leukocytosis is not always present in every infection, as some infections may induce a normal or even decreased WBC count, depending on factors like the type of infection, the individual's immune status, and underlying health conditions.