Immunity to the virus could be double that indicated by serological tests

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Immunity to the coronavirus could be higher than serological tests reveal; This is the conclusion reached by a study carried out by the Karolinska Institutet and the Karolinska University Hospital in Stockholm, Sweden.

What the investigation reveals breaks with the data of the Ministry of Health that affirm that only 5% of the population in Spain presents immunity against the virus. Notes that many mild or asymptomatic Covid-19 patients have T cell immunity, or cellular immunity, even if they have not tested positive for the antibodies, which would mean greater immunity than that obtained from serological tests.

“Our results indicate that approximately twice as many people have developed T-cell immunity compared to those in which we can detect antibodies, ”explained Marcus Buggert, professor at the Karolinska Institutet Center for Infectious Medicine.

Similar conclusions reached a few weeks ago the study published by the prestigious scientific journal ‘Cell’ that opened a new variable in the race to find out the population’s immunity against the coronavirus. Revealed that 38% of the people on whom the study was carried out, all healthy, had cellular immunity, so that their bodies, despite having had no contact with SARS-CoV-2, contained an important cellular defense.

“Not only people with verified Covid-19 showed immunity from these cells, but also their family members exposed”

To develop this new Swedish research sand performed immunological tests on more than 200 people, many of them with mild or asymptomatic symptoms. In addition, patients from the Karolinska hospital and their relatives, who were exposed to Covid-19, were included.

Soo Aleman, researchers at the center, explained that “not only people with verified Covid-19 showed T-cell immunity, but also many of their exposed asymptomatic family members.”

The specialists working on this project consider that it is great news for the public health field, although they also point out that further research should be carried out to verify the duration of this possible immunity and to submit the results to a review.



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