Findings are categorized as follows (1): Isolated maternal fever: A single oral temperature of ≥ 39° C or an oral temperature of ≥ 38 to 39° C that is still present when the temperature is measured after 30 minutes (isolated maternal fever does not automatically lead to a diagnosis of infection) Suspected intraamniotic infection based on maternal fever and clinical criteria (elevated maternal white blood cell [WBC] count, fetal tachycardia, or purulent cervical discharge) Confirmed intraamniotic infection: Sometimes suspected intraamniotic infection is confirmed by results of amniotic fluid tests (Gram staining, culture, glucose level—see below) or histologic evidence of placental infection or inflammation Presence of a single symptom or sign, which may have other causes, is less reliable.