The Triad of COVID-19 in Children: Acute COVID-19, Multisystem Inflammatory Syndrome, and Long COVID—Part I

The coronavirus disease 2019 (COVID-19) originated in Wuhan, China, in late 2019. Within a span of a few months, it was deemed a global pandemic by the World Health Organization. It was first thought to affect the adult population, but soon after, cases of COVID-19 in children started emerging. As more and more pediatric cases started unveiling, an entity called multisystem inflammatory syndrome in children (MIS-C) that replicated Kawasaki disease was established. More recently, it has been noted that children have persistent symptoms for weeks or months after acute COVID-19 infection, and the term coined for these symptoms is “long COVID.” This section of the review will summarize the respiratory, cardiovascular, dermatological, and gastroenterological manifestations noted in infants in three broad categories: acute COVID, MIS-C, and long COVID.