News Release 17-Mar-2026
Discovery of a bacterium that protects against long Covid
Peer-Reviewed Publication
Université catholique de Louvain
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According to WHO, approximately 6% of the worldwide population who contract Covid-19 – some 400 million people – go on to develop a long-lasting form of the disease. These figures demonstrate that the persistent form of the disease remains a problem and is a major public health challenge.
In 2021, in the midst of the Covid-19 pandemic, University of Louvain (UCLouvain, Belgium) and its hospital, the Cliniques universitaires Saint-Luc, launched a large-scale study to determine whether it is possible to predict, during the acute phase of infection, the development of long-term symptoms. The ultimate goal is to better understand the underlying mechanisms and, potentially, develop a preventive therapeutic solution.
After five years of research, scientists have discovered the key role played by a bacterium, Dolosigranulum pigrum, that is naturally present in the respiratory microbiome. When present in greater numbers, these bacteria are associated with a reduction in the persistence of symptoms characteristic of long Covid.
News Release 17-Mar-2026
Discovery of a bacterium that protects against long Covid
www.eurekalert.org/news-release...
Full paper (open access)
journals.asm.org/doi/10.1128/...
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