Antibodies to covid-19 stay in the body for up to seven months after infection

The study carried out by the team led by the principal investigator, Marc Veldhoen, from the Instituto de Medicina Molecular João Lobo Antunes, and by an interdisciplinary team of doctors and researchers from the Faculty of Medicine of the University of Lisbon, from
Centro Hospitalar Lisboa Norte and employees of the Portuguese Blood Institute and
Transplantation shows that antibodies against the SARS-CoV-2 virus are detected
up to seven months after infection, in 90% of the individuals analyzed.

Such results have now been published in the scientific journal European Journal of Immunology and they also show that the severity of the disease, but not the age, influences the levels of antibodies produced.

The study, which is comprehensive and transversal, started at the beginning of the pandemic, in March 2020.

The researchers and first authors of the scientific article now published, Patrícia
Figueiredo-Campos and Birte Blankenhaus, started to configure a serology test for the sensitive, specific and versatile covid-19.

The optimization and validation of the trial was framed as part of the consortium of five institutes in Lisbon and Oeiras, Serology4COVID and had the collaboration of doctors from the Santa Maria Hospital campus, the research team started monitoring the antibody levels of 300 patients of covid-19 and health professionals from this hospital and more than 200 volunteers who were followed after contracting covid-19.

“Our immune system produces antibodies in response to anything that is not part of our body, like a virus, and that helps us fight it. The results of this cross-sectional study of more than six months, up to the 7th month after infection, show a classic pattern of immune response, with a rapid increase in antibody levels in the first three weeks after COVID-19 symptoms and a subsequent reduction “, highlights Marc Veldhoen, adding that “in the initial response phase,
our results show that, on average, men produce more antibodies than women, but the levels are balanced during the resolution phase and are similar between genders in the months after SARS-CoV-2 infection “.


Covid: surge in cases in Switzerland 6 thousand in one day – Last Hour

(ANSA) – GENEVA, OCTOBER 23 – A surge in infections from Covid-19 in Switzerland, where 6,592 new cases have been reported in the last 24 hours. Switzerland, in proportion to the number of inhabitants, has significantly more cases than almost all neighboring countries, said the head of the communicable diseases division of the Health Office, Stefan Kuster, quoted by the Keystone-Ats agency. Figures five times higher than those of Germany, double that of Austria and Italy, he stressed. For the Federal Office, Switzerland has registered 42,290 new cases in the past two weeks, with a rate of 494.9 cases per 100,000 population. (HANDLE).