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Outcomes and Effects of Vaccination on Sars-Cov-2 Omicron Infection in Kidney Transplant Recipients. | LitMetric

Outcomes and Effects of Vaccination on Sars-Cov-2 Omicron Infection in Kidney Transplant Recipients.

Transplant Proc

Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan; Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan; Department of Life Science, Tunghai University, Taichung, Taiwan; School of Medicine, China Medical University, Taichung, Taiwan. Electronic address:

Published: May 2023

AI Article Synopsis

Article Abstract

Background: Kidney transplant recipients (KTRs) are at high risk of COVID-19. Vaccination is significantly effective at preventing infection and reducing infection severity. Omicron infections are less severe than infections by previous strains, but breakthrough disease is more common. Thus, we conducted this study to observe the vaccine efficacy in our KTRs.

Methods: During the surge in the Omicron variant, beginning in May 2022, we retrieved data from 365 KTRs who had received at least one dose of various COVID vaccines until June 30, 2022. Outcomes of the KTRs (n = 168) after at least the 2nd vaccination were assessed until September 30, 2022, before the border was opened for tourism.

Results: The antibody response in KTRs after the 1st and 2nd doses of SARS-CoV-2 vaccines demonstrated a significant increase from the 1st dose (median: 0.4; IQR: 0.4-8.4 U/mL, P < .001) to the 2nd dose (median: 57.5; IQR: 0.4-799.2 U/mL), and the response rate rose from 32% to 65% (P < .001). SARS-CoV-2 infection was identified in 14/365 (3.8%) patients after at least the 1st dose and 7/187 (3.7%) patients at least 7 days beyond the 2nd dose. Most KTRs had a mild course, but 3 (17%) were hospitalized due to pneumonia.

Conclusions: Our data demonstrate a lower response rate and anti-S titers after 2nd dose vaccination in KTRs than in the general population, but a lower incidence of SARS-CoV-2 infection after vaccination was observed during the Omicron outbreak. Owing to the breakthrough infections found in ordinarily vaccinated KTRs, we must emphasize the importance of vaccination and boosters to prevent severe illness, hospitalizations, and death among those developing infections.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10106813PMC
http://dx.doi.org/10.1016/j.transproceed.2023.04.016DOI Listing

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