To the Editor.— Voora et al1 report an interesting study of fever in the full-term newborn during the first four days of life. One percent of the infants had fever but only 0.1% had a proven bacterial etiology, an incidence similar to those reported.2 However, only one third of the febrile infants were studied for viral infection; no viruses were isolated although these data are difficult to interpret since there is no description of the culture techniques used.