Case series: Mild illness, good outcomes in infants hospitalized with COVID-19A small single-center case series published today in Pediatrics describes only mild illness in seven hospitalized infants in New York City with COVID-19 and fever, with none requiring supplemental oxygen, mechanical ventilation, or intensive care.Columbia University researchers conducted a mixed retrospective and prospective study of infants 60 days old and younger (range, 11 to 56 days) hospitalized from Mar 1 to Apr 15 with confirmed infection with SARS-CoV-2, the virus that causes COVID-19.In three of the seven infants (43%), fever was the only symptom at hospital admission.