Is there anything to natural immunity from Covid?

[Tomconroy]

I mean the situation where someone gets Covid and survived. Do they then have protection from getting Covid again? Is the protection as good as the protection from the vaccine? Do we know anything about this? Just wondering

[ColinC]

1. It is protection but not as good as the vaccine.

From what I understand it's a difference of 30% protection to the vaccine's 90% or so protection (depending on when you received the vaccine)

[womanofthehills]

6. What study did you get those numbers from?

Here are some recent studies - the first still needs peer review. .

Conclusions This study demonstrated that natural immunity confers longer lasting and stronger protection against infection, symptomatic disease and hospitalization caused by the Delta variant of SARS-CoV-2, compared to the BNT162b2 two-dose vaccine-induced immunity. Individuals who were both previously infected with SARS-CoV-2 and given a single dose of the vaccine gained additional protection against the Delta variant. https://www.medrxiv.org/content/10.1101/2021.08.24.21262415v1

And ....

Study: COVID rcovery gave Israelis longer-lasting Delta defense than vaccinese

The variant was 27 times more likely to break through Pfizer protection from January-February and cause symptoms than it was to penetrate natural immunity from the same period https://www.timesofisrael.com/study-covid-recovery-gave-israelis-longer-lasting-delta-defense-than-vaccines/

Natural immunity from contracting coronavirus provided Israelis with longer-lasting protection against the Delta variant than two shots of the Pfizer vaccine given early this year, new Israeli research suggests.

The study by Maccabi Healthcare Service looked at individuals who had either gotten two shots of the vaccine by the end of February or tested positive for COVID-19 by that time.

It compared 46,035 Maccabi members who caught the coronavirus at some point during the pandemic and the same number of double-vaccinated people.

“Several months ago, our studies showed that natural infection induced a strong response, and this study now shows that the responses last,” Weiskopf says. “We are hopeful that a similar pattern of responses lasting over time will also emerge for the vaccine-induced responses.” https://www.nih.gov/news-events/nih-research-matters/lasting-immunity-found-after-recovery-covid-19

[Celerity]

7. good on you for calling out an evidence-free reply

[Tomconroy]

10. Wow. So the answer is natural immunity is really good?

If that's confirmed then basically doesn't that mean that getting a mild or asymptomatic case of Covid is not just not a disaster, but actually a good thing?

[blue cat]

12. Natural immunity may be stronger

Down side is having to have disease to get it.

[Tomconroy]

14. Yeah. I looked around a bit. I can't tell from the Israeli study

If it included mild or asymptomatic cases and if they had robust protection too. And there was some American study that said something about antibody levels.

[Ohio Joe]

13. Are you feeling lucky?

Maybe you will be... Or maybe not. Maybe you won't pass it on to others... But maybe you will. You ok taking that chance for them?

[Tomconroy]

15. I was vaxxed long ago. But obviously a whole lot of people

Aren't going to get the jab. For them natural immunity is about it.

[Ohio Joe]

17. ahhh... I see...

I don't much give a fuck about any of those people. The small number of people who have legit medical reasons... OK, that is fine... In fact it because of them it is so important for the rest of us to get vaxxed... but the rest... Fuck 'em. If they die, they die... I kind of hope a lot of them do die. A shame they will also kill family, friends and strangers but at least they will also be dead. I had some sympathy for them up to a point but now their stupidity and willful ignorance is simply tiresome... Let them die.

Honestly... I don't see how anyone could still have a single shit left to give for them

[tblue37]

18. Unless you end up with long covid.

[ColinC]

21. I just saw it in some article months ago. The article itself was likely lacking

Much evidence. A quick Google search confirms your reply:

There is a very, very small chance,” Dr. Esper says. Data shows that fewer than 0.005% of fully vaccinated Americans have experienced a breakthrough case resulting in hospitalization or death — and people who have already had COVID-19 may be even less likely to be reinfected.

[ARPad95]

2. This article seems to conclude that it's still up in the air.

https://www.silive.com/news/2021/09/natural-immunity-or-covid-19-vaccine-mandates-some-study-somewhere-proves-your-point-opinion.html

Natural immunity or COVID-19 vaccine mandates? Some study somewhere proves your point (opinion)

A study from the Centers for Disease Control and Prevention the other day said that 83 percent of Americans age 16 and older have some kind of immunity from COVID-19 either through prior infection or because they’ve been vaccinated.

The study said that a lot more people likely had been infected than initially thought because they had mild cases or no symptoms and were never tested. They never made it into the infection databases.

[RockRaven]

3. Much is known about this. The vaccines confer better immunity than infection, based on

available data so far (with new variants constantly emerging, things could always change in the future). There are many popular/vernacular (i.e. not technical/specialist literature) articles about these findings.

[Tomconroy]

4. Is the efficacy rate any better against serious illness and death

For natural immunity or is it the same?

[teach1st]

5. If you're talking about the Israeli study

The [Israeli] study may have underestimated the number of asymptomatic infections because it collected its data from PCR testing. People with asymptomatic infections are less likely to get tested for SARS-CoV-2, suggesting the results apply primarily to symptomatic infections.

The findings also focused on patients who received the Pfizer-BioNTech vaccine in early 2021. Other research from Israel has recently suggested that vaccine-induced antibody levels wane after several months, but booster shots can enhance immune response. How natural immunity compares to vaccine-induced immunity with booster shots remains unknown.

https://www.factcheck.org/2021/09/scicheck-instagram-post-missing-context-about-israeli-study-on-covid-19-natural-immunity/

...vaccines can add an extra boost to protection in people who recovered from COVID-19. Results showed that a single vaccine dose with natural immunity provided greater protection against reinfection than people with natural immunity alone.

https://www.news-medical.net/news/20210830/Does-SARS-CoV-2-natural-infection-immunity-better-protect-against-the-Delta-variant-than-vaccination.aspx

[Tomconroy]

8. I don't think that's it. How good is natural immunity in

Protecting against serious illness and death? If I'm making myself clear.

[ARPad95]

9. Do you mean protecting against a variant like Delta?

[Tomconroy]

11. I think so. I guess my thought is there obviously going to be

A lot of people who are never going to get vaccinated so natural immunity is about it for them. So how good is that?

[iemanja]

16. They have antibodies that can protect them

which are greatly enhanced by a vaccine.

[Igel]

19. There are two sorts of studies.

One one vaccination after having had COVID already (results really good), the other for immunity just from COVID (no vaccination), pretty good. What "pretty good" means depends on the study, real-life studies aren't always well controlled.

The gap I'm waiting to be filled is immunity level/duration if you contract COVID *after* you're fully vaccinated. Might be tough to control that, because a lot of vaccinated people will have had COVID pre-vax (but then again, you'd expect those to be at sharply reduced risk of symptomatic COVID, so many that can just be quantified and statistically handled).

[Zeitghost]

20. There seems to be

A higher rate of breakthrough cases than there is of re-infection. But being vaccinated leads to a lower re-infection rate, so even if you caught it it's a good idea to get vaccinated.