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COVID-19 awakens dormant viruses — and one is linked to long COVID
Viruses that remain in the body for years, including Epstein-Barr, cytomegalovirus (CMV), and herpes virus, are extremely common. In many people, they cause no symptoms and appear to be harmless. But growing evidence suggests that when these dormant viruses become active again, they may play a role in autoimmune diseases and other long-lasting health conditions.
Now, researchers at Boston Children's Hospital and collaborating institutions have found that COVID 19 can reactivate certain dormant viruses in hospitalized patients. The findings come from a new Nature study involving 15 biomedical research institutions across the United States. The results provide new insight into viruses that persist in the body and could eventually help guide strategies for preventing or treating their reactivation.
Covid-19 Can Reawaken Dormant Viruses in the Body, Which Might Worsen Symptoms of the Respiratory Illness, Study Suggests
Most people become infected with a virus at some point in their lives, be it one that causes the flu or one that causes the common cold. Usually, our bodies can fully clear them out. But some stick around, sleeping in the body until something reawakens them. The herpesvirus that causes chickenpox, for instance, can later lead to shingles.
Now, researchers have found that Covid-19 might be one of those triggers. Out of more than 1,000 unvaccinated patients who were hospitalized with the respiratory illness, nearly half experienced a reactivation of dormant viruses, and some were associated with more severe Covid-19 or long Covid. The findings, published in the journal Nature on August 5, provide a better understanding of the connections and could help pave the way for new medicines.
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