This article published by the South China Morning Post (SCMP) reports on two new studies by separate teams in Germany and the US which suggests that certain immune cells involved in the defense against the common cold can react when exposed to the SARS-CoV-2. The researches do not explore whether this cross-reactive immune response can affect clinical outcomes of COVID-19, scientists believe that this is the reason why some people have less severe responses to SARS-CoV-2 than others.
The German study shows that subjects who had no prior exposure to SARS-CoV-2 had helper T-cells which was capable of recognizing the new coronavirus. Lead researcher Leif Erik Sander says that these cells could have a protective effect. According to Sander, a recent bout with the common cold could lead to less severe COVID-19 symptoms.
Meanwhile, the US study explored the structural similarities between the novel coronavirus and the cold-causing coronavirus, in the hopes of discovering the mechanisms that allow the T-cells to respond. They found strong molecular evidence that the memory T-cells can “see” similar sequences between these two virus strains.
Editor’s Note: While Big Pharma hopes to convince us that the human body does not know how to defend against a novel virus like SARS-CoV-2, scientific evidence shows otherwise. The two researches mentioned by the SCMP are not the first to discover memory T-cells and cross immunity.
In July, the idea of cross-immunity was already being proposed by Japanese researchers to explain the low death rate in Japan [read Why is Japan’s COVID-19 death rate mysteriously low?]. Moreover, Laura Spinney, in an article for The Guardian collates the ideas of various experts suggesting that COVID-19 immunity may be more commonplace than previously thought [see Why are some populations more affected by COVID-19 than others?].
Whether it is cross immunity or true collective immunity against the SARS-CoV-2 that is causing the increase in asymptomatic cases and decline in infections in Sweden and Mumbai, it only points to the fact that our own immune system can neutralize the new coronavirus [to learn about Sweden, read Sweden is winning against the coronavirus, see Mumbai’s poorest may already have collective immunity against SARS-COV-2 to learn understand the case of Mumbai].
Lockdowns, school closures, masking, social distancing - all these are but temporary, often times unnecessary, solutions. The healthier, most effective, most sustainable solution is still boosting one's immune system and paying attention to the general health and the integrity of the human being.
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