The studies I'm able to locate refute what you're claiming. First, one published last month in the journal Science. They followed 188 Covid-positive patients and concluded that "Substantial immune memory is generated after COVID-19, involving all four major types of immune memory. About 95% of subjects retained immune memory at ~6 months after infection.MotorCityRadioFreak wrote: ↑Sun Mar 28, 2021 12:56 pmWe already have had cases of reinfection. The people who got COVID one year ago are at risk now again. Your immunity wears off after a year based on the findings of most virologists (I happen to know one as well). That puts those who contracted COVID a year ago at risk.
https://science.sciencemag.org/content/ ... 9/eabf4063
Assuming this study is ongoing, I'll be curious to see the immunity levels at 1 year.
Moreover, a large-scale study done in Denmark looked at re-infection rates between the first and second wave (roughly 6 months apart from each other). What they found was that natural immunity has 80 percent efficacy in younger people and 44 percent efficacy in adults 65 and older.
https://www.pharmacytimes.com/view/stud ... der-adults
So perhaps not as good as vaccinated immunity, but significant immunity nonetheless. These findings also seemingly suggest that vaccinations are much more important for the elderly than for younger people.
Oh, and on a side-note - if immunity does significantly wear off after a year, that would strengthen my argument that government intervention trying to slow the spread may actually significantly harm our chances of ever reaching herd immunity.