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People who recovered from Covid-19 (a disease caused by the coronavirus) and, after weeks, tested positive for the virus have not been reinfected, he said Sunday (3) in an interview with the WHO technical leader ( World Health Organization), Maria van Kerkhove.
On the BBC’s Andrew Marr Show, he said the tests are reacting with dead cells that emerge during the lung healing process.
“They are not active viruses, it is not reinfection or reactivation,” he said. Positive results in people already cured occur because PCR, or molecular, tests analyze the genetic material of the coronavirus.
After several processing steps, the exam reads the snippets. According to the WHO technical leader, the genetic material of the virus present in the dead lung cells expelled after a few weeks by those recovered ends up being detected in this process.
However, Maria said that scientists still do not know for sure whether patients who have cured and developed antibodies are immunized, how strong the immunity is and how long it lasts.
