Coronavirus penetrates from the lungs to other organs, spreading with blood and lymph, Russian scientists of the Federal State Budgetary Institution National Research Center for Hematology, Peoples' Friendship University of Russia and Moscow State University named after M.V. Lomonosov. To do this, the lungs must have a high viral load and the initial phase of inflammation. This was told by one of the authors of the work, an employee of the laboratory of molecular hematology of the National Research Center for Hematology Adkhamjon Abdullayev.

“We assume that under conditions of impaired blood circulation in the lung, the main route for the spread of coronavirus particles from the lungs to other organs becomes the lymphohematogenic route, as evidenced by the high frequency of detection of SARS-CoV-2 RNA in the lymph nodes of the mediastinum,” he said.

Scientists analyzed tissue samples from 36 patients who died from COVID-19. More than half of them were affected by several organs at once. The spread of coronavirus particles from the lungs to other organs was typical mainly for patients in whom the exudative (initial) phase of inflammation and a high viral load of SARS-CoV-2 were observed in the lung tissue.

The results of the study were published in the journal Viruses.

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