How does the COVID-19 virus affect children under the age of 1?

Bottom Line:

COVID-19 patients below the age of 1 generally had mild symptoms and a good prognosis, with the main clinical signs being cough and fever.


Sun, D. et al. SARS-CoV-2 Infection in Infants Under 1 Year of Age in Wuhan City, China. World J Pediatr (2020).

Date Published:

5 June 2020


This study included data from 36 patients below the age of one, excluding newborns, who tested positive for the COVID-19 virus. The main clinical signs affecting this age group were cough (77.78%) and fever (47.22%), along with phlegm production (22.22%) in addition to gastrointestinal symptoms of diarrhea (25%), nausea and vomiting (11.11%), among others. Most of these children were also found to have pneumonia in both lungs. Just under half of the children had complications from SARS-CoV-2 including damage to the muscular tissue of heart and changes in liver function. Increased white blood cells and other inflammatory markers were also noted in many of these children. Overall, however, it was noted that the majority of the infants only had mild symptoms from the virus, and faced a good prognosis.

Summary by: Max Solish