A study published in the journal Covid-19 says that those who have contracted the Covid-19 virus may have made antibodies for life, even those who have had a mild illness. Nature Magazine.
Researchers have discovered the presence of protective cells in the bone marrow of people who have recovered from the disease and remain in the body for months or even forever.
This is the first time that a study has discovered these types of long-lived plasma cells – so-called memory B cells – that can be reactivated in the event of a new infection.
The study also showed that the level of antibodies drops suddenly four months after infection, but for the first time it shows that the immune system is able to produce more antibodies if necessary.
Good news for long-term immunity and for vaccines, especially those that use mRNA technology – which have also been able to produce this type of cell.
The only big question is just the variants in SARS-CoV-2 that could alter this body’s natural response and reduce the protective effects of antibodies over the years.
In less than a year since the pandemic was declared, several vaccines have been developed in laboratories around the world. The first vaccine to receive emergency authorization for vaccination was Pfizer e BioNTech. The UK was the first country to approve this vaccine and the vaccination campaign will start in December 2020.
More than 3.5 million dead in the world
The COVID-19 pandemic has killed at least 3551,488 people worldwide, resulting in more than 170.6 million infections, according to a report published by Agence France-Presse on Friday.
Covid-19 is a respiratory disease caused by the novel coronavirus SARS-CoV-2 that was discovered in late 2019 in Wuhan, central China.
The vast majority of patients recover, but some develop symptoms for several weeks or even months.
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