CALCA and bacterial infectious disease: Among term infants, PCT and CRP levels and WBC count are also elevated in the presence of respiratory disorders, neonatal asphyxia, intracranial hemorrhage, and hemodynamic abnormalities [21,22,33]; therefore, we showed in the present study that a combination of PCT level, CRP level, WBC count, and/or IgM level could detect early-onset neonatal bacterial infections.