Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers

Introduction: Limited information is available regarding effect of vaccination on protection against Covid-19 infections and their severity as well. Objectives: In the present study, we assessed the effect of Covid-19 vaccination on incidences and severity of break through Covid-19 infections. Metho...

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Main Authors: Alka Verma, Amit Goel, Priyank Yadav, Awale Rupali Bhalchandra, Dheeraj Khetan, Om P Sanjeev, Mallikarjun Gunjiganvi
Format: Article
Language:Indonesian
Published: Universitas Airlangga 2024-08-01
Series:The Indonesian Journal of Occupational Safety and Health
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Online Access:https://e-journal.unair.ac.id/IJOSH/article/view/45637
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author Alka Verma
Amit Goel
Priyank Yadav
Awale Rupali Bhalchandra
Dheeraj Khetan
Om P Sanjeev
Mallikarjun Gunjiganvi
author_facet Alka Verma
Amit Goel
Priyank Yadav
Awale Rupali Bhalchandra
Dheeraj Khetan
Om P Sanjeev
Mallikarjun Gunjiganvi
author_sort Alka Verma
collection DOAJ
description Introduction: Limited information is available regarding effect of vaccination on protection against Covid-19 infections and their severity as well. Objectives: In the present study, we assessed the effect of Covid-19 vaccination on incidences and severity of break through Covid-19 infections. Method: This retrospective study was conducted at a tertiary care center in Northern India during one calendar year, 1st August 2021 to 31st July 2022. The study population included Health-care workers (HCWs) who were treated for Covid 19 infection and had already received at least 1 dose of Covishield TM (AZD1222) Covid-19 vaccine. Results: Out of 1868 health care workers enrolled for the study, 513 contracted Covid-19 infections. Amongst infected HCWs, number of single and double doses of CovishieldTM (AZD1222) recipients were 112 and 401 respectively. Out of the 513 covid positive HCWs, 459 (89.4%) had mild disease, whereas 54 (10.6%) had moderate disease. None of the HCWs developed severe disease and no mortality was noted in either group. Conclusion: In this study, we found that immunization with two doses of CovishieldTM (AZD1222) vaccine was associated with decline in number of cases with moderate or severe Covid-19. Moreover, immunization with even single dose of CovishieldTM (AZD1222) vaccine prevented development of severe disease. Henceforth, it is concluded that although, immunization with CovishieldTM (AZD1222) could not protect all recipients from SARS-Cov-2 infection, it did prevent the progress of disease to severe grades.
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publishDate 2024-08-01
publisher Universitas Airlangga
record_format Article
series The Indonesian Journal of Occupational Safety and Health
spelling doaj-art-00905e10e005463ba61f532dbfc00dc02025-08-20T01:55:27ZindUniversitas AirlanggaThe Indonesian Journal of Occupational Safety and Health2301-80462540-78722024-08-0113222222810.20473/ijosh.v13i2.2024.222-22843722Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care WorkersAlka Verma0Amit Goel1Priyank Yadav2Awale Rupali Bhalchandra3https://orcid.org/0000-0001-6149-8330Dheeraj Khetan4https://orcid.org/0000-0002-1807-2390Om P Sanjeev5https://orcid.org/0000-0002-3041-3514Mallikarjun Gunjiganvi6https://orcid.org/0000-0002-0848-3823Emergency Medicine, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowHepatology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowUrology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowLab Medicine, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowTransfusion Medicine, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowEmergency Medicine, Sanjay Gandhi Post Graduate Institute of Medical Sciences, LucknowGeneral Surgery, AIIMS MangalagiriIntroduction: Limited information is available regarding effect of vaccination on protection against Covid-19 infections and their severity as well. Objectives: In the present study, we assessed the effect of Covid-19 vaccination on incidences and severity of break through Covid-19 infections. Method: This retrospective study was conducted at a tertiary care center in Northern India during one calendar year, 1st August 2021 to 31st July 2022. The study population included Health-care workers (HCWs) who were treated for Covid 19 infection and had already received at least 1 dose of Covishield TM (AZD1222) Covid-19 vaccine. Results: Out of 1868 health care workers enrolled for the study, 513 contracted Covid-19 infections. Amongst infected HCWs, number of single and double doses of CovishieldTM (AZD1222) recipients were 112 and 401 respectively. Out of the 513 covid positive HCWs, 459 (89.4%) had mild disease, whereas 54 (10.6%) had moderate disease. None of the HCWs developed severe disease and no mortality was noted in either group. Conclusion: In this study, we found that immunization with two doses of CovishieldTM (AZD1222) vaccine was associated with decline in number of cases with moderate or severe Covid-19. Moreover, immunization with even single dose of CovishieldTM (AZD1222) vaccine prevented development of severe disease. Henceforth, it is concluded that although, immunization with CovishieldTM (AZD1222) could not protect all recipients from SARS-Cov-2 infection, it did prevent the progress of disease to severe grades.https://e-journal.unair.ac.id/IJOSH/article/view/45637abo blood group,coronavirus infectioncovid-19critical careintubationmortalityseverity
spellingShingle Alka Verma
Amit Goel
Priyank Yadav
Awale Rupali Bhalchandra
Dheeraj Khetan
Om P Sanjeev
Mallikarjun Gunjiganvi
Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
The Indonesian Journal of Occupational Safety and Health
abo blood group,
coronavirus infection
covid-19
critical care
intubation
mortality
severity
title Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
title_full Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
title_fullStr Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
title_full_unstemmed Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
title_short Effect of Covishieldtm (AZD1222) Vaccination on Incidences and Severity of Covid-19 among Health-Care Workers
title_sort effect of covishieldtm azd1222 vaccination on incidences and severity of covid 19 among health care workers
topic abo blood group,
coronavirus infection
covid-19
critical care
intubation
mortality
severity
url https://e-journal.unair.ac.id/IJOSH/article/view/45637
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