Clinical Profile and Outcome of Severe Acute Respiratory Illness (SARI) in Children Amidst the COVID-19 Pandemic

Beginning in December 2019, COVID-19 rapidly emerged as a global pandemic. Though its severity in children was reported to be less than that in adults, data on its epidemiology in relation to severe acute respiratory illness (SARI) caused by other microbes needed to be generated. This study compares the clinical profile and outcome of children hospitalized with COVID-19-positive and negative SARI. This is a prospective observational analytical study involving children 1 month to 18 years old, hospitalized with COVID-19-positive and negative SARI during the pandemic. All eligible patients were enrolled after obtaining informed parental consent. Their clinical manifestations, investigations, and outcomes were documented on a predesigned case record form. A nasopharyngeal swab sample for COVID-19 reverse transcription polymerase chain reaction was sent, and results were noted. From May 2020 to July 2021, 267 children were hospitalized with a diagnosis of SARI. Out of these, 146 (54.7%) were boys and 78.7% were under five years of age. Other presentations included fever and cough, breathlessness, nausea, vomiting, diarrhea, rash, seizures, and altered sensorium. Twenty-eight patients (10.5%) tested positive for COVID-19. COVID-19 patients were similar in terms of demographic characteristics and presenting symptoms to non-COVID-19 patients but had a lower absolute lymphocyte count (p = 0.019) and higher serum alanine transaminase levels (p = 0.013). Acute respiratory distress syndrome (OR, 4.3; 95% CI, 1.8-10.0), shock (OR, 3.9; 95% CI, 1.9-7.9), and need for intensive care unit admission (OR, 9.9; 95% CI, 6.9-14) were more common in COVID-19 SARI patients. Death occurred in 18% of COVID-19 and 9% of non-COVID-19 patients (p = 0.07). SARI nonsurvivors had significantly lower blood pH and platelet counts than survivors. Comparison of COVID-19-positive and negative SARI patients showed subtle differences between the two groups, with COVID-19-positive children having an increased severity of illness. Also, laboratory evidence of multiorgan dysfunction at admission was associated with higher mortality.