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Background: Older adults are at higher risk of severe outcomes from COVID-19 with comorbidities increasing such risk. Much less is known about the outcomes of young adults with COVID-19 despite their having had high infection rates. Objectives: Our objective was to determine outcomes of hospitalized young adults with COVID-19 infection including rates of oxygen use, mortality, ICU admission, intubation, duration of hospitalization, and factors associated with adverse outcomes. Study design: This retrospective cohort study included EHR data from 21 health systems in the United States on 18–29-year-olds hospitalized with COVID-19 from March 1, 2020 – January 31, 2022. Oxygen need was used to identify symptomatic COVID-19. Rates for mortality, ICU admission, and intubation were calculated for the symptomatic and asymptomatic groups. Effects of demographic and health characteristics on outcomes were assessed as were changes in hospital outcomes over time. Results: Our sample included 9871 young adults hospitalized with COVID-19; 35% required oxygen. Of those who required oxygen, 53.5% were female, 23.7% had an anxiety disorder, 2.6% died (n = 89), 27.7% were admitted to the ICU (n = 955), and 15.8% were intubated (n = 547). A past-year history of any cancer was associated with a 2.1 times increased odds of death. Vaccination was associated with a >40% reduction in the odds of ICU admission. Mortality rates did not change significantly across the study period. Conclusions: COVID-19 caused significant morbidity and mortality in hospitalized young adults who required oxygen. A cancer history was associated with increased risk of death. Vaccination appeared to have had a protective effect on illness severity.

Purpose: Pegloticase-associated adverse events reported to the Food and Drug Administration Adverse Event Reporting System (FAERS) database in the United States were evaluated., Methods: Retrospective data-mining analysis of FAERS case reports listing Krystexxa or pegloticase as the suspect drug and specific adverse events (cardiovascular events, infusion-related reactions, gout flares, and anaphylaxis) was conducted from the drug's approval date (September 14, 2010) through August 27, 2012. Initial and follow-up reports with the same primary linked identification number were identified as unique to each patient case. When multiple reports for the same patient were identified with a common case number, the report with the most recent date was used to eliminate duplicate reports. Bayesian confidence propagation neural network methodology was used to identify signals of drug-associated adverse events. A potential signal for drug-adverse event reports is generated when the lower limit of the 95% two-sided confidence interval of the information component is greater than 0., Results: A total of 118 unique cases of adverse events involving pegloticase in the United States were identified during the study period. Fourteen reports were related to pegloticase-associated cardiovascular events, and 35 were related to pegloticase-associated infusion-related reactions. Twenty-six reports were related to pegloticase-associated gout, and 11 were reports of pegloticase-associated anaphylaxis. Bayesian statistics identified potential signals for all pegloticase-associated adverse events (cardiovascular events, infusion reactions, gout flares, and anaphylaxis)., Conclusion: Analysis of pegloticase-associated adverse events submitted to the FAERS database found that cardiovascular events, infusion-related reactions, gout flares, and anaphylaxis occurred more frequently than was statistically expected.