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Item Author Correction: Cross-reactive immunity against the SARS-CoV-2 Omicron variant is low in pediatric patients with prior COVID-19 or MIS-C(Springer Nature, 2022-08-12) Tang, Juanjie; Novak, Tanya; Hecker, Julian; Grubbs, Gabrielle; Zahra, Fatema Tuz; Bellusci, Lorenza; Pourhashemi, Sara; Chou, Janet; Moffitt, Kristin; Halasa, Natasha B.; Schwartz, Stephanie P.; Walker, Tracie C.; Tarquinio, Keiko M.; Zinter, Matt S.; Staat, Mary A.; Gertz, Shira J.; Cvijanovich, Natalie Z.; Schuster, Jennifer E.; Loftis, Laura L.; Coates, Bria M.; Mack, Elizabeth H.; Irby, Katherine; Fitzgerald, Julie C.; Rowan, Courtney M.; Kong, Michele; Flori, Heidi R.; Maddux, Aline B.; Shein, Steven L.; Crandall, Hillary; Hume, Janet R.; Hobbs, Charlotte V.; Tremoulet, Adriana H.; Shimizu, Chisato; Burns, Jane C.; Chen, Sabrina R.; Moon, Hye Kyung; Lange, Christoph; Randolph, Adrienne G.; Khurana, Surender; Pediatrics, School of MedicineCorrection to: Nature Communications 10.1038/s41467-022-30649-1, published online 27 May 2022Item Changes in Pediatric ICU Utilization and Clinical Trends During the Coronavirus Pandemic(Elsevier, 2021) Zee-Cheng, Janine; McCluskey, Casey K.; Klein, Margaret J.; Scanlon, Matthew C.; Rotta, Alexandre T.; Shein, Steven L.; Pineda, Jose A.; Remy, Kenneth E.; Carroll, Christopher L.; Pediatrics, School of MedicineBackground Children have been less affected by the COVID-19 pandemic, but its repercussions on pediatric illnesses may have been significant. This study examines the indirect impact of the pandemic on a population of critically ill children in the United States. Research Question Were there significantly fewer critically ill children admitted to PICUs during the second quarter of 2020, and were there significant changes in the types of diseases admitted? Study Design and Methods This retrospective observational cohort study used the Virtual Pediatric Systems database. Participants were 160,295 children admitted to the PICU at 77 sites in the United States during quarters 1 (Q1) and 2 (Q2) of 2017 to 2019 (pre-COVID-19) and 2020 (COVID-19). Results The average number of admissions was similar between pre-COVID-19 Q1 and COVID-19 Q1 but decreased by 32% from pre-COVID-19 Q2 to COVID-19 Q2 (20,157 to 13,627 admissions per quarter). The largest decreases were in respiratory conditions, including asthma (1,327 subjects in pre-COVID-19 Q2 (6.6% of patients) vs 241 subjects in COVID-19 Q2 (1.8%; P < .001) and bronchiolitis (1,299 [6.5%] vs 121 [0.9%]; P < .001). The percentage of trauma admissions increased, although the raw number of trauma admissions decreased. Admissions for diabetes mellitus and poisoning/ingestion also increased. In the multivariable model, illness severity-adjusted odds of ICU mortality for PICU patients during COVID-19 Q2 increased compared with pre-COVID-19 Q2 (OR, 1.165; 95% CI, 1.00-1.357; P = .049). Interpretation Pediatric critical illness admissions decreased substantially during the second quarter of 2020, with significant changes in the types of diseases seen in PICUs in the United States. There was an increase in mortality in children admitted to the PICU during this period.Item Characteristics and Outcomes of Critically Ill Children With Multisystem Inflammatory Syndrome(Wolters Kluwer, 2022-11) Snooks, Kellie; Scanlon, Matthew C.; Remy, Kenneth E.; Shein, Steven L.; Klein , Margaret J.; Zee-Cheng, Janine; Rogerson, Colin M.; Rotta, Alexandre T.; Lin, Anna; McCluskey, Casey K.; Carroll , Christopher L.; Pediatrics, School of MedicineObjectives: To characterize the prevalence of pediatric critical illness from multisystem inflammatory syndrome in children (MIS-C) and to assess the influence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) strain on outcomes. Design: Retrospective cohort study. Setting: Database evaluation using the Virtual Pediatric Systems Database. Patients: All children with MIS-C admitted to the PICU in 115 contributing hospitals between January 1, 2020, and June 30, 2021. Measurements and Main Results: Of the 145,580 children admitted to the PICU during the study period, 1,338 children (0.9%) were admitted with MIS-C with the largest numbers of children admitted in quarter 1 (Q1) of 2021 (n = 626). The original SARS-CoV-2 viral strain and the D614G Strain were the predominant strains through 2020, with Alpha B.1.1.7 predominating in Q1 and quarter 2 (Q2) of 2021. Overall, the median PICU length of stay (LOS) was 2.7 days (25–75% interquartile range [IQR], 1.6–4.7 d) with a median hospital LOS of 6.6 days (25–75% IQR, 4.7–9.3 d); 15.2% received mechanical ventilation with a median duration of mechanical ventilation of 3.1 days (25–75% IQR, 1.9–5.8 d), and there were 11 hospital deaths. During the study period, there was a significant decrease in the median PICU and hospital LOS and a decrease in the frequency of mechanical ventilation, with the most significant decrease occurring between quarter 3 and quarter 4 (Q4) of 2020. Children admitted to a PICU from the general care floor or from another ICU/step-down unit had longer PICU LOS than those admitted directly from an emergency department. Conclusions: Overall mortality from MIS-C was low, but the disease burden was high. There was a peak in MIS-C cases during Q1 of 2021, following a shift in viral strains in Q1 of 2021. However, an improvement in MIS-C outcomes starting in Q4 of 2020 suggests that viral strain was not the driving factor for outcomes in this population.Item Cross-reactive immunity against the SARS-CoV-2 Omicron variant is low in pediatric patients with prior COVID-19 or MIS-C(Springer Nature, 2022-05-27) Tang, Juanjie; Novak, Tanya; Hecker, Julian; Grubbs, Gabrielle; Tuz Zahra, Fatema; Bellusci, Lorenza; Pourhashemi, Sara; Chou, Janet; Moffitt, Kristin; Halasa, Natasha B.; Schwartz, Stephanie P.; Walker, Tracie C.; Tarquinio, Keiko M.; Zinter, Matt S.; Staat, Mary A.; Gertz, Shira J.; Cvijanovich, Natalie Z.; Schuster, Jennifer E.; Loftis, Laura L.; Coates, Bria M.; Mack, Elizabeth H.; Irby, Katherine; Fitzgerald, Julie C.; Rowan, Courtney M.; Kong, Michele; Flori, Heidi R.; Maddux, Aline B.; Shein, Steven L.; Crandall, Hillary; Hume, Janet R.; Hobbs, Charlotte V.; Tremoulet, Adriana H.; Shimizu, Chisato; Burns, Jane C.; Chen, Sabrina R.; Moon, Hye Kyung; Lange, Christoph; Randolph, Adrienne G.; Khurana, Surender; Pediatrics, School of MedicineNeutralization capacity of antibodies against Omicron after a prior SARS-CoV-2 infection in children and adolescents is not well studied. Therefore, we evaluated virus-neutralizing capacity against SARS-CoV-2 Alpha, Beta, Gamma, Delta and Omicron variants by age-stratified analyses (<5, 5-11, 12-21 years) in 177 pediatric patients hospitalized with severe acute COVID-19, acute MIS-C, and in convalescent samples of outpatients with mild COVID-19 during 2020 and early 2021. Across all patients, less than 10% show neutralizing antibody titers against Omicron. Children <5 years of age hospitalized with severe acute COVID-19 have lower neutralizing antibodies to SARS-CoV-2 variants compared with patients >5 years of age. As expected, convalescent pediatric COVID-19 and MIS-C cohorts demonstrate higher neutralization titers than hospitalized acute COVID-19 patients. Overall, children and adolescents show some loss of cross-neutralization against all variants, with the most pronounced loss against Omicron. In contrast to SARS-CoV-2 infection, children vaccinated twice demonstrated higher titers against Alpha, Beta, Gamma, Delta and Omicron. These findings can influence transmission, re-infection and the clinical disease outcome from emerging SARS-CoV-2 variants and supports the need for vaccination in children.Item Early Use of Adjunctive Therapies for Pediatric Acute Respiratory Distress Syndrome: A PARDIE Study(American Thoracic Society, 2020-06) Rowan, Courtney M.; Klein, Margaret J.; Hsing, Deyin Doreen; Dahmer, Mary K.; Spinella, Philip C.; Emeriaud, Guillaume; Hassinger, Amanda B.; Piñeres-Olave, Byron E.; Flori, Heidi R.; Haileselassie, Bereketeab; Lopez-Fernandez, Yolanda M.; Chima, Ranjit S.; Shein, Steven L.; Maddux, Aline B.; Lillie, Jon; Izquierdo, Ledys; Kneyber, Martin C.J.; Smith, Lincoln S.; Khemani, Robinder G.; Thomas, Neal J.; Yehya, Nadir; Pediatrics, School of MedicineRationale: Few data exist to guide early adjunctive therapy use in pediatric acute respiratory distress syndrome (PARDS).Objectives: To describe contemporary use of adjunctive therapies for early PARDS as a framework for future investigations.Methods: This was a preplanned substudy of a prospective, international, cross-sectional observational study of children with PARDS from 100 centers over 10 study weeks.Measurements and Main Results: We investigated six adjunctive therapies for PARDS: continuous neuromuscular blockade, corticosteroids, inhaled nitric oxide (iNO), prone positioning, high-frequency oscillatory ventilation (HFOV), and extracorporeal membrane oxygenation. Almost half (45%) of children with PARDS received at least one therapy. Variability was noted in the median starting oxygenation index of each therapy; corticosteroids started at the lowest oxygenation index (13.0; interquartile range, 7.6-22.0) and HFOV at the highest (25.7; interquartile range, 16.7-37.3). Continuous neuromuscular blockade was the most common, used in 31%, followed by iNO (13%), corticosteroids (10%), prone positioning (10%), HFOV (9%), and extracorporeal membrane oxygenation (3%). Steroids, iNO, and HFOV were associated with comorbidities. Prone positioning and HFOV were more common in middle-income countries and less frequently used in North America. The use of multiple ancillary therapies increased over the first 3 days of PARDS, but there was not an easily identifiable pattern of combination or order of use.Conclusions: The contemporary description of prevalence, combinations of therapies, and oxygenation threshold for which the therapies are applied is important for design of future studies. Region of the world, income, and comorbidities influence adjunctive therapy use and are important variables to include in PARDS investigations.Item Epidemiology and Outcomes of SARS-CoV-2 Infection or Multisystem Inflammatory Syndrome in Children vs Influenza Among Critically Ill Children(American Medical Association, 2022-06-01) Shein, Steven L.; Carroll, Christopher L.; Remy, Kenneth E.; Rogerson, Colin M.; McCluskey, Casey K.; Lin, Anna; Rotta, Alexandre T.; Pediatrics, School of MedicineThis cohort study compares the epidemiology and outcomes of patients in the pediatric intensive care unit with SARS-CoV-2–related disease during the first 15 months of the COVID-19 pandemic vs children with critical influenza prior to the pandemic.Item Health Impairments in Children and Adolescents After Hospitalization for Acute COVID-19 or MIS-C(American Academy of Pediatrics, 2022) Maddux, Aline B.; Berbert, Laura; Young, Cameron C.; Feldstein, Leora R.; Zambrano, Laura D.; Kucukak, Suden; Newhams, Margaret M.; Miller, Kristen; FitzGerald, Madyson M.; He, Jie; Halasa, Natasha B.; Cvijanovich, Natalie Z.; Loftis, Laura L.; Walker, Tracie C.; Schwartz, Stephanie P.; Gertz, Shira J.; Tarquinio, Keiko M.; Fitzgerald, Julie C.; Kong, Michele; Schuster, Jennifer E.; Mack, Elizabeth H.; Hobbs, Charlotte V.; Rowan, Courtney M.; Staat, Mary A.; Zinter, Matt S.; Irby, Katherine; Crandall, Hillary; Flori, Heidi; Cullimore, Melissa L.; Nofziger, Ryan A.; Shein, Steven L.; Glas Gaspers, Mary; Hume, Janet R.; Levy, Emily R.; Chen, Sabrina R.; Patel, Manish M.; Tenforde, Mark W.; Weller, Edie; Campbell, Angela P.; Randolph, Adrienne G.; Overcoming COVID-19 Investigators; Pediatrics, School of MedicineObjectives: To evaluate risk factors for postdischarge sequelae in children and adolescents hospitalized for acute coronavirus disease 2019 (COVID-19) or multisystem inflammatory syndrome in children (MIS-C). Methods: Multicenter prospective cohort study conducted in 25 United States pediatric hospitals. Patients <21-years-old, hospitalized May 2020 to May 2021 for acute COVID-19 or MIS-C with follow-up 2 to 4 months after admission. We assessed readmissions, persistent symptoms or activity impairment, and new morbidities. Multivariable regression was used to calculate adjusted risk ratios (aRR) and 95% confidence intervals (CI). Results: Of 358 eligible patients, 2 to 4 month survey data were available for 119 of 155 (76.8%) with acute COVID-19 and 160 of 203 (78.8%) with MIS-C. Thirteen (11%) patients with acute COVID-19 and 12 (8%) with MIS-C had a readmission. Thirty-two (26.9%) patients with acute COVID-19 had persistent symptoms (22.7%) or activity impairment (14.3%) and 48 (30.0%) with MIS-C had persistent symptoms (20.0%) or activity impairment (21.3%). For patients with acute COVID-19, persistent symptoms (aRR, 1.29 [95% CI, 1.04-1.59]) and activity impairment (aRR, 1.37 [95% CI, 1.06-1.78]) were associated with more organ systems involved. Patients with MIS-C and pre-existing respiratory conditions more frequently had persistent symptoms (aRR, 3.09 [95% CI, 1.55-6.14]) and those with obesity more frequently had activity impairment (aRR, 2.52 [95% CI, 1.35-4.69]). New morbidities were infrequent (9% COVID-19, 1% MIS-C). Conclusions: Over 1 in 4 children hospitalized with acute COVID-19 or MIS-C experienced persistent symptoms or activity impairment for at least 2 months. Patients with MIS-C and respiratory conditions or obesity are at higher risk of prolonged recovery.Item Infants Admitted to US Intensive Care Units for RSV Infection During the 2022 Seasonal Peak(American Medical Association, 2023-08-01) Halasa, Natasha; Zambrano, Laura D.; Amarin, Justin Z.; Stewart, Laura S.; Newhams, Margaret M.; Levy, Emily R.; Shein, Steven L.; Carroll, Christopher L.; Fitzgerald, Julie C.; Michaels, Marian G.; Bline, Katherine; Cullimore, Melissa L.; Loftis, Laura; Montgomery, Vicki L.; Jeyapalan, Asumthia S.; Pannaraj, Pia S.; Schwarz, Adam J.; Cvijanovich, Natalie Z.; Zinter, Matt S.; Maddux, Aline B.; Bembea, Melania M.; Irby, Katherine; Zerr, Danielle M.; Kuebler, Joseph D.; Babbitt, Christopher J.; Glas Gaspers, Mary; Nofziger, Ryan A.; Kong, Michele; Coates, Bria M.; Schuster, Jennifer E.; Gertz, Shira J.; Mack, Elizabeth H.; White, Benjamin R.; Harvey, Helen; Hobbs, Charlotte V.; Dapul, Heda; Butler, Andrew D.; Bradford, Tamara T.; Rowan, Courtney M.; Wellnitz, Kari; Allen Staat, Mary; Aguiar, Cassyanne L.; Hymes, Saul R.; Randolph, Adrienne G.; Campbell, Angela P.; RSV-PIC Investigators; Pediatrics, School of MedicineImportance: Respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract infections (LRTIs) and infant hospitalization worldwide. Objective: To evaluate the characteristics and outcomes of RSV-related critical illness in US infants during peak 2022 RSV transmission. Design, setting, and participants: This cross-sectional study used a public health prospective surveillance registry in 39 pediatric hospitals across 27 US states. Participants were infants admitted for 24 or more hours between October 17 and December 16, 2022, to a unit providing intensive care due to laboratory-confirmed RSV infection. Exposure: Respiratory syncytial virus. Main outcomes and measures: Data were captured on demographics, clinical characteristics, signs and symptoms, laboratory values, severity measures, and clinical outcomes, including receipt of noninvasive respiratory support, invasive mechanical ventilation, vasopressors or extracorporeal membrane oxygenation, and death. Mixed-effects multivariable log-binomial regression models were used to assess associations between intubation status and demographic factors, gestational age, and underlying conditions, including hospital as a random effect to account for between-site heterogeneity. Results: The first 15 to 20 consecutive eligible infants from each site were included for a target sample size of 600. Among the 600 infants, the median (IQR) age was 2.6 (1.4-6.0) months; 361 (60.2%) were male, 169 (28.9%) were born prematurely, and 487 (81.2%) had no underlying medical conditions. Primary reasons for admission included LRTI (594 infants [99.0%]) and apnea or bradycardia (77 infants [12.8%]). Overall, 143 infants (23.8%) received invasive mechanical ventilation (median [IQR], 6.0 [4.0-10.0] days). The highest level of respiratory support for nonintubated infants was high-flow nasal cannula (243 infants [40.5%]), followed by bilevel positive airway pressure (150 infants [25.0%]) and continuous positive airway pressure (52 infants [8.7%]). Infants younger than 3 months, those born prematurely (gestational age <37 weeks), or those publicly insured were at higher risk for intubation. Four infants (0.7%) received extracorporeal membrane oxygenation, and 2 died. The median (IQR) length of hospitalization for survivors was 5 (4-10) days. Conclusions and relevance: In this cross-sectional study, most US infants who required intensive care for RSV LRTIs were young, healthy, and born at term. These findings highlight the need for RSV preventive interventions targeting all infants to reduce the burden of severe RSV illness.Item Neurologic Involvement in Children and Adolescents Hospitalized in the United States for COVID-19 or Multisystem Inflammatory Syndrome(AMA, 2021-03) LaRovere, Kerri L.; Riggs, Becky J.; Poussaint, Tina Y.; Young, Cameron C.; Newhams, Margaret M.; Maamari, Mia; Walker, Tracie C.; Singh, Aalok R.; Dapul, Heda; Hobbs, Charlotte V.; McLaughlin, Gwenn E.; Son, Mary Beth F.; Maddux, Aline B.; Clouser, Katharine N.; Rowan, Courtney M.; McGuire, John K.; Fitzgerald, Julie C.; Gertz, Shira J.; Shein, Steven L.; Munoz, Alvaro Coronado; Thomas, Neal J.; Irby, Katherine; Levy, Emily R.; Staat, Mary A.; Tenforde, Mark W.; Feldstein, Leora R.; Halasa, Natasha B.; Giuliano, John S.; Hall, Mark W.; Kong, Michele; Carroll, Christopher L.; Schuster, Jennifer E.; Doymaz, Sule; Loftis, Laura L.; Tarquinio, Keiko M.; Babbitt, Christopher J.; Nofziger, Ryan A.; Kleinman, Lawrence C.; Keenaghan, Michael A.; Cvijanovich, Natalie Z.; Spinella, Philip C.; Hume, Janet R.; Wellnitz, Kari; Mack, Elizabeth H.; Michelson, Kelly N.; Flori, Heidi R.; Patel, Manish M.; Randolph, Adrienne G.; Overcoming COVID-19 Investigators; Gaspers, Mary G; Typpo, Katri V; Sanders, Ronald C; Schwarz, Adam J; Harvey, Helen; Zinter, Matt S; Mourani, Peter M; Coates, Bria M; Bhoojhawon, Guru; Havlin, Kevin M; Montgomery, Vicki L; Sullivan, Janice E; Bradford, Tamara T; Bembea, Melania M; Lipton, Susan V; Graciano, Ana Lia; Chen, Sabrina R; Kucukak, Suden; Newburger, Jane W; Carroll, Ryan W; Fernandes, Neil D; Yager, Phoebe H; Marohn, Kimberly L; Heidemann, Sabrina M; Cullimore, Melissa L; McCulloh, Russell J; Horwitz, Steven M; Li, Simon; Walsh, Rowan F; Ratner, Adam J; Soma, Vijaya L; Gillen, Jennifer K; Zackai, Sheemon P; Ackerman, Kate G; Cholette, Jill M; Harwayne-Gidansky, Ilana; Hymes, Saul R; Overby, Philip J; Schwartz, Stephanie P; Lansell, Amanda N; Koncicki, Monica L; Carcillo, Joseph; Fink, Ericka; Kimura, Dai; Bowens, Cindy; Crandall, Hillary; Smith, Lincoln S; Cengiz, Pelin; Pediatrics, School of MedicineImportance Coronavirus disease 2019 (COVID-19) affects the nervous system in adult patients. The spectrum of neurologic involvement in children and adolescents is unclear. Objective To understand the range and severity of neurologic involvement among children and adolescents associated with COVID-19. Setting, Design, and Participants Case series of patients (age <21 years) hospitalized between March 15, 2020, and December 15, 2020, with positive severe acute respiratory syndrome coronavirus 2 test result (reverse transcriptase-polymerase chain reaction and/or antibody) at 61 US hospitals in the Overcoming COVID-19 public health registry, including 616 (36%) meeting criteria for multisystem inflammatory syndrome in children. Patients with neurologic involvement had acute neurologic signs, symptoms, or diseases on presentation or during hospitalization. Life-threatening involvement was adjudicated by experts based on clinical and/or neuroradiologic features. Exposures Severe acute respiratory syndrome coronavirus 2. Main Outcomes and Measures Type and severity of neurologic involvement, laboratory and imaging data, and outcomes (death or survival with new neurologic deficits) at hospital discharge. Results Of 1695 patients (909 [54%] male; median [interquartile range] age, 9.1 [2.4-15.3] years), 365 (22%) from 52 sites had documented neurologic involvement. Patients with neurologic involvement were more likely to have underlying neurologic disorders (81 of 365 [22%]) compared with those without (113 of 1330 [8%]), but a similar number were previously healthy (195 [53%] vs 723 [54%]) and met criteria for multisystem inflammatory syndrome in children (126 [35%] vs 490 [37%]). Among those with neurologic involvement, 322 (88%) had transient symptoms and survived, and 43 (12%) developed life-threatening conditions clinically adjudicated to be associated with COVID-19, including severe encephalopathy (n = 15; 5 with splenial lesions), stroke (n = 12), central nervous system infection/demyelination (n = 8), Guillain-Barré syndrome/variants (n = 4), and acute fulminant cerebral edema (n = 4). Compared with those without life-threatening conditions (n = 322), those with life-threatening neurologic conditions had higher neutrophil-to-lymphocyte ratios (median, 12.2 vs 4.4) and higher reported frequency of D-dimer greater than 3 μg/mL fibrinogen equivalent units (21 [49%] vs 72 [22%]). Of 43 patients who developed COVID-19–related life-threatening neurologic involvement, 17 survivors (40%) had new neurologic deficits at hospital discharge, and 11 patients (26%) died. Conclusions and Relevance In this study, many children and adolescents hospitalized for COVID-19 or multisystem inflammatory syndrome in children had neurologic involvement, mostly transient symptoms. A range of life-threatening and fatal neurologic conditions associated with COVID-19 infrequently occurred. Effects on long-term neurodevelopmental outcomes are unknown.Item The Temporal Relationship Between Local School Closure and Increased Incidence of Pediatric Diabetic Ketoacidosis(Frontiers Media, 2022-03-11) McCluskey, Casey K.; Zee-Cheng, Janine E.; Klein, Margaret J.; Scanlon, Matthew C.; Rotta, Alexandre T.; Remy, Kenneth E.; Carroll, Christopher L.; Shein, Steven L.; Pediatrics, School of MedicineImportance: The incidence of pediatric diabetic ketoacidosis (DKA) increased early in the COVID-19 pandemic, but the relative contribution of behavioral changes and viral-related pathophysiology are unknown. Objective: To evaluate the relationship between school closure date and onset of increased DKA to help clarify the etiology of the increased incidence. Design: A multi-center, quality-controlled Pediatric Intensive Care Unit (PICU) database was used to identify the number of admissions to a participating PICU with DKA on each calendar day from 60 days before local school closure to 90 days after, and compared to baseline data from the same periods in 2018-2019. Interrupted time series and multiple linear regression analyses were used to identify admission rates that differed significantly between 2020 and baseline. Setting: Eighty-one PICUs in the United StatesParticipants: Children ages 29 days to 17 years admitted to a PICU with DKAExposures: Statewide school closureMain outcome/measure: Rate of admission to the PICU for DKA. Results: There were 1936 admissions for children with DKA in 2020 and 1795 admissions/year to those same PICUs in 2018-2019. Demographics and clinical outcomes did not differ before school closure, but pandemic-era patients were less often white and had longer hospital length of stay in the post-school closure period. The difference between 2020 admissions and 2018-2019 admissions was not different than zero before school closure, and significantly higher than zero after school closure, but was significantly increased in 2020 at >30 days after school closure (p = 0.039). Conclusions/relevance: An increase in pediatric DKA admissions began one month after school closures. Given that behavioral changes started near school closure dates and viral activity peaked weeks after, this suggests that behavioral factors may not be the primary etiology and it is possible that SARS-CoV-2 infection may have direct effects on pediatric DKA.