People who have recovered from a COVID-19 infection are expected to have some protection against another repeat infection by the COVID-19 Coronavirus.
The protection comes from patients own antibodies present in their blood.
Previously, there was a concern that this protection might not last very long and that the levels of protective antibody may drop off quickly and this in turn can lead to repeat infections.
Now a study from Oxford indicates that protection against repeat infection (re-infection) can last atleast 6 months.
This news indirectly might also be good news for COVID-19 vaccines .
Vaccines work by tricking the body into thinking that there is a virus infection and the body then produces the protective antibodies and cells.
Based on this study, one can logically hope that the protection by vaccines can be long lasting as well. Of course, nothing is certain and further vaccine data is awaited to confirm this.
References: (1) Lumley SF, O’Donnell D, Stoesser NE, et al., Oxford University Hospitals Staff Testing Group. Antibody status and incidence of SARS-CoV-2 infection in health care workers. N Engl J Med2020. doi:10.1056/NEJMoa2034545. pmid:33369366
(2) BMJ news: Covid-19: Antibodies protect against reinfection for at least six months, study finds. BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4961 (Published 30 December 2020)
Cite this as: BMJ 2020;371:m4961
(3). BBC news: Covid reinfection: Man gets Covid twice and second hit ‘more severe’
By James Gallagher
Health and science correspondent
(4). Lancet Infectious diseases. Genomic evidence for reinfection with SARS-CoV-2: a case study. Richard L Tillett, PhD, Joel R Sevinsky, PhD, Paul D Hartley, PhD, Heather Kerwin, MPH, Natalie Crawford, MD, Andrew Gorzalski, PhD, et al. Published:October 12, 2020. DOI: https://doi.org/10.1016/S1473-3099(20)30764-7
Disclaimer: Please note- This blog is NOT medical advice. This blog is purely for information only and do check the the sources where cited. Please DO consult your own doctor to discuss concerns and options relevant to you.
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