A fatal course of multiple inflammatory syndrome in children coinfection with dengue. A case report from Indonesia

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) or corona virus disease 2019 (COVID-19) is a currently ongoing global pandemic. Children tend to show milder symptoms of infection compared to adults. Concurrently, in April 2020, there was reported an escalation of Kawasaki cases like disease in children treated in the intensive care unit and showing polymerase chain reaction (PCR) SARS CoV-2 positive. Those children had a hyperinflammatory response, which caused the failure of multi-organ and shock. Several countries have reported similar cases since then. Here we describe a case of a patient with COVID-19 and concurrent dengue infection presenting MIS-C. A 6-year-old male with no past medical history looked pale with fatigue and brought to an emergency room from a referral hospital. The patient presented with fever, acute abdominal pain, shock, and deteriorate quickly, confirmed with the serology of SARS CoV-2 IgM was reactive, serology of anti-dengue IgM was reactive and PCR SARS CoV-2 was negative. Possibly it is MIS-C coinfection with severe unusual dengue infection or MIS-C with false-positive dengue serologic test leading to a fatal outcome.