New daily infections grew by nearly 3 per cent from a day before, with the total number of cases reaching 1,345,767.
The number of new coronavirus infections in France rose by 17,881 on Saturday, lower than the 22,882 reported on Friday.
With this caveat, the authors argued that because roughly 90% of the test subjects developed immune memory "consisting of at least three immunological compartments" more than five months after they initially displayed symptoms, there is reason to believe that last immunity against COVID-19 could be possible in most people.
"It provides a clear explanation for why SARS-CoV-2 spreads more efficiently than SARS-CoV and MERS-CoV and is so much more hard to contain", Cevik added. In this study, researchers focused on T cells to determine the causes of severe pneumonia in COVID-19.
In other words, there was a very slow rate of decline of these cells, demonstrating that they persist in the body for a very long time.
The study is the result of a collaboration led by Associate Professor Menno van Zelm, from Monash University and was published on Monday in the preprint server, MedRxiv. Or before day five of COVID-19 symptoms.
As per the reports authored by various scientists and medical professionals, patients who recovered from the SARS-CoV-2 infection developed high levels of B cells and T cells, which play an important role in fending off the virus.
COVID-19 continues to have an enormous impact on daily lives. This research analyzed genetic data from bronchoalveolar lavage fluids from lungs of patients with COVID-19 from Wuhan, China to characterize the activity and genetic characteristics of the CD4+ T cells present.
Dr Katie Jeffery, director of infection prevention and control for Oxford University Hospitals said: "This is an exciting finding, indicating that infection with the virus provides at least short-term protection from reinfection - this news comes in the same month as other encouraging news about Covid-19 vaccines".