I have read an interesting study by Sun et al.[1] published in the June 2020 issue of the World Journal of Pediatrics.The authors studied the SARS-CoV-2 infection in infants under 1 year of age in Wuhan City, China.Li et al.[2] reported that the prevalence of malnutrition in elderly patients with coronavirus disease 2019 (COVID-19) was high, and nutritional support should be strengthened during treatment.The authors reported that 25％ of infants had an underlying disease in the study.