Posted on 02/01/2022 10:07:48 PM PST by SeekAndFind
The protection people experience after recovering from COVID-19, known widely as natural immunity, lasts for at least 18 months, according to a recently published study.
Researchers in Italy analyzed the level of antibodies in 36 patients who were documented as contracting COVID-19 in March 2020. About half of the patients went on to get COVID-19 vaccines, but the rest remained unvaccinated. Samples from all but two were tested at timed intervals, ending in September 2021, using assays that have received clearance from the U.S. Food and Drug Administration.
“At 18 months, 97% participants tested positive for anti-NCP, hinting towards the persistence of infection-induced immunity even for the vaccinated individuals,” researchers wrote in the preprint paper, which was published on the medrxiv website.
NCP stands for nucleocapsid, a part of SARS-CoV-2. Antibodies are believed to protect people against against infection from the virus.
“Antibodies against nucleocapsid will be present only in recovered individuals and not vaccinated,” Dr. Asiya Zaidi, a research fellow at the Associazione Naso Sano and one of the authors, told The Epoch Times in an email.
That means even the people who got vaccinated received protection from natural immunity.
Researchers did find that vaccination with Pfizer-BioNTech COVID-19 vaccines gave those with prior infection a significant boost, but that the increase in protection waned relatively quickly.
“Our study findings demonstrate that while double dose vaccination boosted the IgG titers in recovered individuals 161 times, this “boost” was relatively short-lived. The unvaccinated recovered individuals, in contrast, continued to show a steady decline but detectable antibody levels. We do believe that further studies are required to re-evaluate the timing and dose regimen of vaccines for an adequate immune response in recovered individuals,” Zaidi said.
Limitations of the longitudinal observational study include the small number of patients.
The researchers, who fund their own research, said the limited sample size was due to a lack of funding because repeated serology tests for each patient for 18 months was expensive and because following up with all the patients and reminding them of the testing was difficult.
Its strengths include the remarkable length of time.
“This is the longest observation (March 2020-September 2021) for the presence of antibodies against SARS-CoV-2 in recovered individuals along with the impact of 2 dose-BNT162b2 vaccination on the titers,” the researchers wrote.
SARS-CoV-2, also known as the CCP (Chinese Communist Party) virus, causes COVID-19. BNT162b2 is the trade name for the Pfizer jab.
Previous studies have demonstrated the powerful effect of natural immunity against the virus, including a study published in Nature in mid-January that found that the response of memory B cells, a marker of protection against severe COVID-19, evolved in the months following infection “in a manner that is consistent with antigen persistence.”
Other markers of protection were observed in studies in 2021 to last at least over 7 months, at least 8 months, at least 10 months, at least 11 months, at least 13 months, and at least 14 months. The studies were completed before the emergence of the Omicron virus variant, which early data indicate is better at evading both natural immunity and vaccine-derived protection.
Vaccines last 3 months, but at aroudn one month, start losing effectiveness rapidly-
I just found out today I tested positive for Covid antibodies. I have no idea when I had it. I was really sick in late January 2020 with a weird bug that has me in bed for several weeks. I then stayed healthy until last July when I got Shingles. Then I got a cold around Christmas and that lingered for several weeks. Four antigen tests said negative for Covid. I then got either a mild relapse or a different bug during the middle of January for about a week. I tested once and that was negative. My wife got the second bug. We both decided to get a serology test last week. Hers was negative and mine positive. So, I really have no idea when I had it. I’ve been on 36mg of Ivermectin per week for six months. The negative antigen tests suggest to me that I was probably asymptomatic sometime between July and November. Either that or the antigen tests are total garbage.
thanks for this
Good. That is a plus to going through that mess. I earned it. 😏
That's a weird way to formulate it!
How about: Fortunately, the protection enjoyed by people with natural immunity was not significantly compromised by the "Vaxx?"
Regards,
Why was this article written?
All of it was destroyed by the last paragraph.
Who cares how a virus that no longer exists behaved?
Last longer than that. Tucker had a Dr. on who touted 3 years+.
Seems to me that Natural Immunity should last for life.
Antibody levels are not the only protection.
There is long term T Cell immunity that lasts years.
But gotta keep the people afraid and off balance all the time.
Yet somehow those who had SARS in 2003 had the antibodies for COVID-1984 17 years later.
You are correct. Unless your immune system is tinkered with, your cells will always remember how it won the battle.
numerous new studies suggest that Covid-19 infection in recovered persons results in a lasting protective immune response,[136] [137][138] [139][140][141][142] [143][144] [145] [146] [147] to a degree up to at least 18 months,[148] including in people who developed only mild symptoms of Covid-19, [149]and perhaps equal to[150] or even greater than vaccination alone[151] [152][153] [154][155] [156]
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