Delayed Mortality Among Solid Organ Transplant Recipients Hospitalized for COVID-19

Abstract Background Most studies of solid organ transplant (SOT) recipients with coronavirus disease 2019 (COVID-19) focus on outcomes within 1 month of illness onset. Delayed mortality in SOT recipients hospitalized for COVID-19 has not been fully examined. Methods We used data from a multicenter registry to calculate mortality by 90 days following initial acute respiratory syndrome coronavirus 2 (SARS-CoV-2) detection in SOT recipients hospitalized for COVID-19 and developed multivariable Cox proportional hazards models to compare risk factors for death by days 28 and 90. Results Vital status at day 90 was available for 936 of 1117 (84%) SOT recipients hospitalized for COVID-19; 190 of 936 (20%) died by 28 days, and an additional 56 of 246 deaths (23%) occurred between days 29 and 90. Factors associated with mortality by day 90 included age >65 years (adjusted hazard ratio [aHR], 1.8 [1.3–2.4]; P