Effectiveness of different vaccine platforms in reducing mortality and length of ICU stay in severe and critical cases of COVID-19 in the Omicron variant era: A national cohort study in Iran.

Various severe acute respiratory syndrome coronavirus 2 vaccines with different platforms have been administered worldwide; however, their effectiveness in critical cases of COVID-19 has remained a concern. In this national cohort study, 24 016 intensive care unit (ICU) coronavirus disease-2019 (COVID-19) admissions were included from January to April 2022. The mortality and length of ICU stay were compared between the vaccinated and unvaccinated patients. A total of 9428 (39.25%) patients were unvaccinated, and 14 588 (60.75%) patients had received at least one dose of the vaccine. Compared with the unvaccinated, the first, second, and third doses of vaccine resulted in 8%, 20%, and 33% lower risk of ICU mortality in the adjusted model, with risk ratio (RR): 0.92, 95% confidence interval (CI): 0.84-1.001, RR: 0.80, 95% CI: 0.77-0.83, and RR: 0.67, 95% CI: 0.64-0.71, respectively. The mean survival time was significantly shorter in the unvaccinated versus the fully vaccinated patients (hazard ratio [HR]: 0.84, 95% CI: 0.80-0.88); p < 0.001). All vaccine platforms successfully decreased the hazard of ICU death compared with the unvaccinated group. The duration of ICU stay was significantly shorter in the fully vaccinated than in unvaccinated group (MD, -0.62, 95% CI: -0.82 to -0.42; p < 0.001). Since COVID-19 vaccination in all doses and platforms has been able to reduce the risk of mortality and length of ICU-stay, universal vaccination is recommended based on vaccine availability.

Effect of Sofosbuvir on Length of Hospital Stay in Moderate COVID-19 Cases; a Randomized Controlled Trial.

Introduction: Efforts to control the COVID-19 pandemic are still on. This study aimed to evaluate the effect of sofosbuvir on length of hospital stay and complications in COVID-19 cases with moderate severity. Methods: This randomized clinical trial was done on moderate COVID-19 cases, who were admitted to Shohadaye Tajrish Hospital, Tehran, Iran, from 4/2021 to 9/2021. Eligible patients were randomly allocated into two groups of intervention (sofosbuvir) and control, and their outcomes were compared regarding the length of hospital stay and complications. Results: 100 COVID-19 cases were randomly divided into two groups of 50 patients, as the intervention and control groups. The mean age of patients was 50.56 ± 12.23 and 57.1±14.1 years in the intervention and control groups, respectively (p = 0.02). The two groups were similar regarding distribution of gender (p = 0.15), underlying diseases (p = 0.08), the severity of COVID-19 (p = 0.80) at the time of admission, signs and symptoms (p > 0.05), and essential laboratory profile (p > 0.05). The length of hospital stay in the control and intervention groups was 7.7 ± 4.09 days and 4.7±1.6 days, respectively (p = 0.02). None of our patients needed ICU or mechanical ventilation. Conclusion: Sofosbuvir may decrease the length of hospital stay of COVID-19 cases with moderate severity, without a significant effect on the rate of intensive care unit (ICU) need and mortality.

Organ Procurement From Donors After Brain Death During the COVID-19 Pandemic: Experience of a High Prevalence Country.

OBJECTIVES: Our aim was to compare the donation process before and after the COVID-19 pandemic in an organ procurement unit in Iran and to discuss different strategies to address the impact of the pandemic on the donation process. MATERIALS AND METHODS: All activities including donor detection, donor selection, family approach, donors characteristics, rate of organs per donor, and types of organs were compared between 2 intervals over 18 months (March 2020 to June 2021 [during the COVID19 pandemic] vs November 2018 to February 2020 [before the pandemic]). RESULTS: Before and during the COVID-19 pandemic, there were 218 and 137 brain dead donors with mean age of 42.6 ± 14.5 and 42.8 ± 15.5 years, respectively (P = .82). The prevalence of tumors leading to brain death decreased by more than half during the COVID-19 pandemic (P = .04). There was a 52% increase in cardiac death before organ retrieval during the COVID-19 pandemic, reaching 38% from 25% before COVID-19. During the 2 intervals, the number of organs per donor was 2.3 ± 1.2 and 2.2 ± 1.2 (P = .52). The rate of actual to potential donors before and during the pandemic was significantly different, with 42.16 ± 7.8% before and 29.9 ± 4.8% during the pandemic, mostly as a result of unsuitable donors. The time to obtain family consent during the COVID-19 pandemic was 35.1 ± 8.5 hours, which was a significantly longer length of time than before the pandemic (21.3 ± 12.3 hours; P = .008). CONCLUSIONS: In our organ procurement unit, which encompasses a population of 5.5 million in Tehran, Iran, the number of actual donors was reduced dramatically during the studied pandemic period. However, despite a high workload, all transplant centers and organ procurement units in Iran worked to identify and transplant the available organs to reduce wait list mortality.