The new study from the National Institutes of Health of the United States helps to explain the effects of Long Covid even in those asymptomatic or mildly ill patients
The coronavirus that causes Covid-19 can spread tol heart and brain within days of infection and can survive for months in organs, according to a new study from the National Institutes of Health. The research has shown that Sars CoV-2 in addition to affecting organs also outside the respiratory system pu persist even months after the initial infection. The work was conducted in the first year of the pandemic, before vaccines were available and did not examine the impact of immunization on the spread of the virus. The study, which can help explain the so-called Long Covid, symptoms that persist for a long time, even months after virological recovery, i.e. with negative swab, is considered one of the most comprehensive reviews on how the virus replicates in human cells and persists in the body and under review for publication in the journal Nature.
For a long time we have wondered why the Long-Covid can affect so many organs and systems and this research is a concrete help to explain why the Long Covid can also affect people who have had a mild or asymptomatic disease, commented to Bloomberg Ziyad Al- Aly director of the Clinical Epidemiology Center at the Veterans Affairs St. Louis Health Care System in Missouri.
Researchers from the National Institutes of Health sampled and analyzed the autopsy tissues on 44 patients died after contracting the coronavirus during the first year of the pandemic. They found persistent viral particles in multiple parts of the body, including heart and brain, as far as 230 days after the onset of symptoms even in those who had died of other causes, even if it was found to be positive in a mild or asymptomatic way. The same persistent infection mechanism has been observed in patients with measles.
Infections were most prominent in the respiratory system, but results showed that the virus can spread early during infection and affect cells throughout the body, including the brain, as well as eye tissue, muscles, skin. , the nerves, peripheral tissues, the cardiovascular, gastrointestinal, endocrine and lymphatic systems explain the authors.
We still don’t know what the burden of chronic disease will be in the years to come, Bloomberg News told Bloomberg News Raina MacIntyre, professor of biosafety at the University of New South Wales. Will we see juvenile-onset heart failure? An early onset dementia? We do not have answers yet but for this we must be cautious and mitigate the spread of this virus as much as possible.
January 14, 2022 (change January 14, 2022 | 18:29)
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