CRP is an acute-phase protein with low and stable plasma concentrations (around 0.5 mg/mL) in basal conditions in many individuals [19], but may rise in concentration with a factor of 10 to 20 upon an even small inflammation-causing event such as infection or may be present at persistently increased concentrations in plasma from individuals with long-term risk for coronary heart disease [20,21]. This evidence concerns the gene CRP and infection.