Yes, the abstract refers to NATURAL immunity, which the science consistently finds to be both superior to and longer lived than the questionable and quickly diminishing immunity provided by the experimental "vaccines."
Abstract
Understanding the long-term kinetics of antibodies in coronavirus disease 2019 (COVID-19) is essential in interpreting serosurvey data. We investigated the antibody response one year after infection in 52 mildly symptomatic patients with severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection, using three commercial immunoassays and a surrogate virus neutralization test (sVNT) kit. Anti-N pan-immunoglobulin (Ig), anti-S IgG, and anti-S1 IgG were detected in 43 (82.7%), 44 (84.6%), and 30 (57.7%), respectively. In 49 (94.2%), the antibody could be detected by either anti-N pan-Ig or anti-S IgG assay. In the sVNT, 30 (57.7%) had positive neutralizing activity. Despite waning immunity, SARS-CoV-2 antibodies can be detected up to one year after infection, even in mild COVID-19 patients.
When you complain, ur friends roll their eyes and ur enemies rejoice
"Because I SAY I am" is a todler's tantrum, not "science"
You cannot betray me - only yourself, to me.
Who cuts off your dick is not a friend
An opinion you won't defend is not your own
Humanity's Law of the Jungle: Survival NOT of the fittest, but of the tribe
When peeing in the pool, stand on the edge
If gender is not sex, why should a gender claim change what sex you shower with?