doclinkin wrote:NIH study:
Antibodies elicited by mRNA-1273 vaccination bind more broadly to the receptor binding domain than do those from SARS-CoV-2 infection
The mRNA vaccines seem to provide better broad spectrum protection against new COVID variants than immunity from a prior infection of a particular strain.
https://pubmed.ncbi.nlm.nih.gov/34103407/https://directorsblog.nih.gov/2021/06/22/how-immunity-generated-from-covid-19-vaccines-differs-from-an-infection/Yale university study found that while B-cell antibodies do provide improved long term protection still, vaccination tends to be even better:
“While T cells play a role during acute infections, our antibodies are crucial for long-term protection against re-infection,” said Benjamin Goldman-Israelow, a postdoctoral researcher in Iwasaki’s lab and lead author of the study.
The paper was published Sept. 2 in the journal Science Immunology.
Goldman-Israelow stressed that previous research has shown that people who received mRNA-based vaccines produce more antibodies than those who were naturally infected. And naturally infected people who then received a vaccination produced even more antibodies, perhaps providing greater protection against re-infection.
On the
study in Israel that showed better natural immunity among the infected vs the vaccinated:
Thålin [stresses that] infection among unvaccinated people puts them at significant risk of severe disease and death, or the lingering, significant symptoms of what has been dubbed Long Covid. The study shows the benefits of natural immunity, but “doesn’t take into account what this virus does to the body to get to that point”
and
Thålin cautions that the numbers for infections and other events analyzed for the comparisons were “small.” For instance, the higher hospitalization rate in the 32,000-person analysis was based on just eight hospitalizations in a vaccinated group and one in a previously infected group.
These are what I like to call "petri-dish studies". They are looking a the cellular level, trying to assess which type of immunity (vaccination versus natural) produces more specific antibody responses under a microscope. The problem is that the studies assume we fully understand every aspect of the immune system. It rests on the belief that more of "Type X" antibody titer is better than less of "Type X" antibody titer without factoring the full range of immuno-response - CD4 and CD8 B-cells, white blood cells, etc. These studies are useful in that they are a starting point, but they don't grasp the whole picture.
The bottom line is that we have actual, real world studies, not petri-dish studies, that show that natural immunity is more effective and more durable than vaccination immunity. We may not know exactly why, but we do know that it's true. Furthermore, natural immunity also prevents the spread because it attacks the incoming virus at the point of entry: the mucous tissues in the sinuses and lungs, rather than waiting for the virus to get to the blood stream.
The real world Israel study with a massive sample size says natural immunity is between 13 times and 27 times better than vaccination
The real world Qatar study shows that natural immunity prevents reinfection with 95% efficiency relative to Covid-naive individuals. Out of 43,000 previously infected, only 129 got reinfected, only 3 suffered moderate symptoms, 1 suffered severe, and 0 were critical or fatal. The control group had an infection rate 21 times higher. 95% protection beats the vaccines, which generally look to be about 90% protective.
The real world Cleveland Clinic Study which followed 1359 previously-infected employees and found 0 reinfections over the next 5 months
Real world study in India tracking 1081 previously infected. In 9 months, only 13 were re-infected and all were mild.
Here is a study of studies, showing that natural immunity is robust and long lasting
Even
the WHO is ceding that natural immunity is comparable to vaccination:
WHO Press Release wrote:To conclude, available tests and current knowledge do not tell us about the duration of immunity and protection against reinfection, but recent evidence suggests that natural infection may provide similar protection against symptomatic disease as vaccination, at least for the available follow up period. The emergence of variants of concern poses challenges and their potential to evade immunity elicited by either natural infection or by vaccination, needs to be closely monitored.
And this was back in May, before the Israel study came out.
doclinkin wrote:Then:
In another analysis, the researchers compared more than 14,000 people who had a confirmed SARS-CoV-2 infection and were still unvaccinated with an equivalent number of previously infected people who received one dose of the Pfizer-BioNTech vaccine. The team found that the unvaccinated group was twice as likely to be reinfected as the singly vaccinated.
This argument is constantly brought up by you, dckingsfan, and the media as if it's meaningful. So what if natural immunity + vaccination is better than natural immunity alone. The point still stands that natural immunity alone is better than vaccination immunity alone. With natural immunity, your chances of dying from Covid get cut by about 20-50X. So Bradley Beal, who had roughly a 1 in 100,000 chance of dying of Covid the first time, now has a 1 in 2-5 million chance of dying from a re-infection. With odds that low, there isn't much benefit in going to get vaccinated to improve his odds to 1 in 10 million. Either way, we are talking lightning strike type of odds.
Furthermore, by what authority does the government have to force the natural immune to go get vaccinated when they are already significantly less harmful to others than vaccinated people lacking natural immunity? That's like demanding that a jogger wear a helmet because we know helmets protect cyclists from dying. Well, sure, a helmet might be of marginal benefit to a jogger, but a jogger without a helmet is still much safer than a cyclist with one, so we don't bother insisting that joggers wear helmets too.