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In the study conducted by Public Health England, protective cells were found in the blood of each patient tested, six months after the coronavirus test was positive.
The study, which has not yet been peer reviewed, was based on research from the UK Public Health Center and the UK Coronavirus Immunology Consortium.
According to the results, T cells with strong responses to Covid-19 peptides were detected after six months in all participants who had asymptomatic, mild or moderate disease.
T lymphocytes are one of the main components of the immune system. Their role in the body is to kill infected cells and activate other immune cells that have taken control of the virus.
According to the Independent Turkish report, The following statements were included in the study, which was made available on the Biroxiv website:
“Our data provides confidence that the T cell response to SARS-CoV-2 is maintained 6 months after infection. However, the magnitude of this response correlates with the clinical features of the infection.”
‘GIVES TRUST AND COURAGE’
Professor Paul Moss, professor of hematology and head of the UK’s Coronavirus Immunology Consortium, said the new data gave confidence and encouragement.
“This study provides strong evidence that T-cell immunity to SARS-CoV-2 may last longer than antibody immunity,” said Prof Charles Bangham of Imperial College London.
On the other hand, some experts pointed out that the results do not provide clear information on whether people will be reinfected by the coronavirus.
Eleanor Riley, Professor of Immunology and Infectious Diseases at the University of Edinburgh, said that immunity is a functional term meaning resistance to infections and that this term has not been directly demonstrated in this study.
Determining whether these T cell responses protect against reinfection requires an experimental or very large, long-term study to assess the frequency of reinfection in these individuals.
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