Why is COVID-19 so mild in children?

ACE2 is the SARS-CoV-2 Receptor Required for Cell Entry. A possible theory for the mild COVID-19 infections in children is related to differences in the expression of the angiotensin converting enzyme (ACE) 2 receptor necessary for SARS-Cov2 binding and infection.https://we.tl/t-1qnxAuJxTdDownload full article Covid-19 in children Peter BRODIN. #coronavirus #covid19 Dr Jalel BEN Ghozzia. Pediatrician.Tunisia