Canadian scientists have established that many older people who have undergone COVID-19 at the beginning of the pandemic, unlike young, is still preserved immunity, which protects against Delta Stamma. The results of the study reported in the journal Scientific Reports, RIA Novosti reports.
According to data, vaccinated has a higher level of antibodies than those who have been passing, and the vaccinated and then vaccinated – even higher, compared to simply vaccinated.
Scientists from the University of Montreal decided to compare the degree of immune defense in three groups of the population: in a light or asymptomatic form, vaccinated and lost in a light form and then vaccinated.
It is noted that the study began in 2020, before the appearance of beta strains, Gamma and Delta.
According to the data, those who received the Pfizer Biontech or Astrazeneca vaccine, the level of antibodies was significantly higher than those of infected people, and from the high-speed high titers were preserved longer in the elderly.
“After 16 weeks after the diagnosis of the antibody was still present in their bloodstream, – are given in a press release of the Montreal University of the word one of Jean-François Masson, Professor of the Chemical Faculty.
It also notes that a person who has undergone COVID-19 in a light form, after vaccination, the level of antibodies doubles, and the newly formed antibodies better prevent the interaction between the virus S-protein and the ACE-2 receptors through which the coronavirus penetrates into the cells.
Scientists will continue their research to determine the best combination of antibodies for efficient protection against all coronavirus options.