A recent study has revealed that the antibodies after Covid-19 infection remain in the immune system for up to 17 months later and that people who suffered a serious illness generate more antibodies.
The study was based on the analysis of 769 cases in health workers who became infected with the SARS-CoV-2 virus.
Likewise, it was revealed that people who had a mild infection generated less amount of antibodies, also that there are significant differences in the generation of antibodies between men and women on day 30 of the infection for all the antibodies measured.
The study was carried out in the Catalan autonomous community, in eastern Spain, and is the largest to date, both in terms of number of participants and duration.
It could also be known thatMen have a higher immune response soon after infectionbut that with the passage of time, this is equal to that of women.
To carry out the study, health professionals have been followed for 17 months, including both people who were infected with SARS-CoV-2 and others who were not in contact with the virus.
Follow-ups with blood tests were carried out periodically to study the response to the virus and questionnaires to know in detail the effects of the virus on the study participants.
Research has focused on the results provided by IgG(N) antibodies, since these are not altered by vaccination against Covid-19with which the immune response generated by the infection can be differentiated from that produced by the vaccine.
Therefore, the conclusion of the study is also valid for people who generated antibodies through vaccination.
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The study was published in the journal BMC Infectious Diseases and was carried out with the participation of the Northern Metropolitan Health Care Department of the Catalan Health Institute (ICS), the Germans Trias Hospital, the Germans Trias i Pujol Research Institute (IGTP ), the IrsiCaixa AIDS Research Institute and the Jordi Gol i Gurina Foundation for Research in Primary Health Care (IDIAPJGol).
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