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Seroprevalence of anti-SARS-CoV-2 antibodies in residents of Karachi-challenges in acquiring herd immunity for COVID 19.
- Source :
-
Journal of public health (Oxford, England) [J Public Health (Oxf)] 2021 Apr 12; Vol. 43 (1), pp. 3-8. - Publication Year :
- 2021
-
Abstract
- Background: The recent pandemic by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a global emergency. There is large number of asymptomatic cases of SARS-CoV-2 that are not reported. Hence, serological evidence of SARS-CoV2 antibodies is warranted for a better estimation of the actual number of infected patients to limit the disease spread and to get an idea of herd immunity.<br />Methods: This is a cross-sectional study conducted from May 2020 to July 2020 at National Institute of Blood Diseases at Pakistan. The study includes healthcare workers (HCWs), community and industrial workers. The anti-SARS-CoV-2 test was performed by electrochemiluminescence immunoassay analyzer.<br />Results: A total of 1675 samples have been received from three groups of population. The percentage positivity for industrial employees is high (50.3%) for HCW (13.2%) and community population (34%).Total percentage for positive antibodies result is ~36%.<br />Conclusion: Our seroprevalence is 36%, which still far from herd immunity that needs to be at least 60-70% in population. If we consider acquiring 60% seroprevalence in next few months, then herd immunity is not far from reality, provided the antibodies did not decline with time. Although the current study is based on a small sample of participants, the findings suggest a study with larger population to implement stronger and targeted interventions.<br /> (© The Author(s) 2020. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Details
- Language :
- English
- ISSN :
- 1741-3850
- Volume :
- 43
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Journal of public health (Oxford, England)
- Publication Type :
- Academic Journal
- Accession number :
- 32940328
- Full Text :
- https://doi.org/10.1093/pubmed/fdaa170