![]() ![]() The scientists found links between specific groups of bacteria and particular symptoms.Īt the time of hospital admission, people who went on to develop long COVID tended to have a less diverse and abundant microbiome compared with people who fully recovered. The Center for Gut Microbiota Research has now found the first evidence of gut dysbiosis in people with long COVID up to 6 months after their initial SARS-CoV-2 infection. This disruption in the balance of organisms living in the gut, known as gut dysbiosis, appeared to be more extreme in people with more severe illness.īecause the gut plays a major role in the regulation of the immune system, disturbances in the gut microbiota may not only exacerbate COVID-19 but also cause lingering symptoms as a result of continuing immune disturbances. ![]() The collection of genomes of the gut microbiota is known as the gut microbiome.įecal samples from people with COVID-19 contained more opportunistic pathogens or disease-causing organisms and fewer “friendly” bacteria. ![]() They discovered that people with COVID-19 had distinct changes in their gut microbiota, the community of microorganisms living in their gut, compared with healthy controls. In 2020, researchers at the Center for Gut Microbiota Research, part of the Chinese University of Hong Kong, found a clue. It also remains unclear why some people who have had COVID-19 experience lingering symptoms for weeks or months while others recover completely. The exact cause of long COVID remains a mystery, but possible contributory factors are excessive immune responses and cell damage sustained during the illness itself. As many as three-quarters of people who recover from COVID-19 report experiencing at least one lingering symptom 6 months later.Ĭommon symptoms of this condition, known as PACS or long COVID, include fatigue, muscle weakness, and insomnia. ![]()
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