Can there be a link between SARS-CoV-2 and the microbiota?
In the viral message, a series of correlations is established between the supposed role of Prevotella and the fact that certain categories of individuals would be more exposed to Covid-19. If there is therefore absolutely no evidence that these bacteria are in some way "the armed wing of SARS-CoV-2", the microbiota is a fundamental element, as Professor Burcelin explains: “It controls the immune system, especially at birth, and will control it throughout its life. The quality of our immune defense represented by white blood cells will depend on the diversity of the number of different bacteria. However, if we have an imbalance in the intestinal microbiota, we will have an imbalance in our defense. " Elderly or obese people have a weak and unbalanced immune system, which naturally puts them at increased risk of getting sick. The microbiota "is an important player in pulmonary infections, particularly viral infections," says Geneviève Héry-Arnaud, who currently heads the Microbiota group within the Inserm UMR 1078 unit in Brest. She adds: "We know that the respiratory microbiota plays a fundamental role, along with the intestinal microbiota, in that it is able to thwart the installation of a virus or a pathogenic bacteria. " In summary, no "major discovery" has been made about the central role of Prevotella. This theory was developed from unverified prepublications, which are based in part on data that may be in error.