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Lasting immunity found after recovery from Covid-19

nih.gov

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Re: Lasting immunity found after recovery from Covid-19

#311

Post by takoid »

Causality1 wrote: post #55
takoid wrote: post #31

Earlier quoted context omitted.

Source?

https://www.nejm.org/doi/full/10.1056/NEJMc2032195

> They also measured significantly higher density of antibodies at the six week mark in people who had their second vaccine dose vs people who recovered from an infection.

I am not seeing evidence of this from the source you provided. It only mentions that natural infection "produces variable antibody longevity and may induce robust memory B-cell responses despite low plasma neutralizing activity."

Re: Lasting immunity found after recovery from Covid-19

#312

Post by NullPrefix »

walterbell wrote: post #119

For those in the EU, the upcoming travel pass will cover three categories of people: vaccinated, PCR-tested negative, and recovered (i.e. positive antibody test of immunity), https://www.schengenvisainfo.com/news/all-your-questions-on-... > For travellers who have recovered from the virus: date of the positive test result, an issuer of the certificate, date of issuance, validity date The bureaucratic stumbling block…

> the upcoming travel pass will cover ... and recovered (i.e. positive antibody test of immunity)

From the linked article:

>For travellers who have recovered from the virus: date of the positive test result, an issuer of the certificate, date of issuance, validity date

EU Travel Pass doesn't care about your antibodies.

Re: Lasting immunity found after recovery from Covid-19

#313

Post by M2Ys4U »

thedrbrian wrote: post #266
rsj_hn wrote: post #34

Earlier quoted context omitted.

exactly, but it's still good to do the research even if it just confirms what we've believed all along.

It’s just a shame that the populace have been scared into thinking this virus is different and that lockdowns and the associated damage is worth it.

Take a look at the devastation happening in India because of the disease.

Lockdowns were (and are) worth it.

Re: Lasting immunity found after recovery from Covid-19

#314

Post by rsj_hn »

M2Ys4U wrote: post #313
thedrbrian wrote: post #266

Earlier quoted context omitted.

It’s just a shame that the populace have been scared into thinking this virus is different and that lockdowns and the associated damage is worth it.

Take a look at the devastation happening in India because of the disease. Lockdowns were (and are) worth it.

Looking at one side of an equation is never going to tell you whether something is worthwhile. You have to look at all sides.

It's not at all clear that lockdowns were worth it, but I wouldn't say it's obvious in either direction.

Rather, we have been conducting a grand experiment on society, far different than our reaction to other similar diseases in which there was no society-wide lockdown. In fact over several millennia spent dealing with plagues, we have never conducted a society-wide lockdown as a response to an outbreak before now.

This is the first time we've done it, and the full costs of this experiment are not yet known - and they wont be understood for decades to come.

Re: Lasting immunity found after recovery from Covid-19

#315

Post by textgel »

virgilp wrote: post #202
T-hawk wrote: post #195

Earlier quoted context omitted.

Nice army of straw men. You're trying to redefine literally existing in public as recklessness. Self-centered? The people demanding the nonvaccinated cease existing in society because of their fears are the selfish ones. I'm saying nothing about anyone else's choices or activities whatsoever. Restricting someone else's behavior and bodily autonomy is the selfish act. 100 people forcibly removing 1 person from society…

You can't walk naked on the street, despite it "doing no harm", because of other people's sensitivities. You need to adapt to the society, it's not the society's duty to adapt to you. If it bothers enough people, you can't do it. Call it law, call it mob rule, call it whatever you wish - it's just how the world works.

Exactly, it's not societies duty to adapt to you, and some societies are more beholden to principles surrounding liberty; there are plenty of other more authoritarian societies available for those who want more restrictions.

And the 100 vs 1 argument is very poorly thought out; we have just had a year of people shut in their homes for the sake of the few who were at risk. For the argument to suddenly swing on its axis, it would strongly suggest an authoritarian thrilled at the opportunity to exercise their will on others.

Re: Lasting immunity found after recovery from Covid-19

#316

Post by ryandrake »

radu_floricica wrote: post #160
Cederfjard wrote: post #139

Earlier quoted context omitted.

> Thus limiting those that are not vaccinated and making it difficult to move freely for them. > ... that effectively will force many to be vaccinated. Yup, that’s the point. No man is an island. You already can’t walk around doing literally whatever you want just because it’s your body you’re doing it with. You depend on other people, and other people depend on you (or at least can’t avoid intermingling with you, es…

I agree with your points, but I'd really really like to avoid giving the impression of... glee? "Look at those unwashed unvaccinated Trump supporters, so good they'll be forced to do things our ways now!". I'm not saying you're doing it, I'm just piggybacking on your comment. I'm pretty much a high-modernist when it comes to vaccines - I think that having governments build sewage and create vaccines go into the same…

Seatbelt laws curtail liberties, too, but most societies have decided that the good effects massively outweigh the small freedom inconvenience of putting a buckle in a latch and going about your day.

Also, I bet you're vaccinated against polio. Do people feel their freedom has been limited because of being vaccinated against polio?

Re: Lasting immunity found after recovery from Covid-19

#317

Post by sharken »

mygoodaccount wrote: post #284
thwarted wrote: post #261

Earlier quoted context omitted.

Are you daft? I'm not offering what I think of other people's opinions as an argument about vaccination. I'm responding to your assertion that there is actually valuable debate to be had with rubes whose only argument is "I don't like being told what to do".

> Are you daft? This style of dialogue is not welcome here. Try Reddit.

Well put and my thoughts exactly. Hacker News is a great place for all kinds of information and great discussions too.

Let's try and keep it that way.

Re: Lasting immunity found after recovery from Covid-19

#318

Post by true_religion »

timr wrote: post #56
paxys wrote: post #12

This is promising. Anecdotally though, I know people in India who got covid (with symptoms) twice or even thrice over the last 12 months. I imagine antibody generation is different for different people, and/or response to variants of the virus is different.

This sounds apocryphal. Second infections are incredibly rare , let alone three in twelve months. Like clockwork, every discussion of this matter on a discussion board brings out at least one person claiming to know people who have been re-infected, yet the number of confirmed examples is measured in the low hundreds, worldwide.

I think it’s low because in the beginning no one could get tested for COVID.

I had an illness back in March 2020 that knocked me out for 2 weeks. Could have been COVID but my state had 0 available test kits so no one can confirm it. February 2021, I’m I’ll again for 2 week. This time it’s confirmed COVID.

If we expect immunity to only last about 12 months, then it could have been reinfection especially considering by 2021 there were 4 more strains to get.

Re: Lasting immunity found after recovery from Covid-19

#319

Post by js2 »

js2 wrote: post #302
breck wrote: post #229

Earlier quoted context omitted.

No, it looked at reinfection for up to a year. "Out of 149,735 individuals with a documented positive PCR test between March 2020 and January 2021". The 100 days was the threshold they used for recovery.

Oops, you're right. But this is still just one paper with a number of limitations that concludes with "health policymakers should acknowledge the possibility of reinfection and reconsider the differential message to recovered population." Still, it's clearly the case that people who have been infected are at reduced risk. I've been vaccinated and was never infected, so it's not a personal decision for me, but given t…

This paper found a 0.65% re-infection rate in Denmark:

"Among eligible PCR-positive individuals from the first surge of the epidemic, 72 (0·65% [95% CI 0·51-0·82]) tested positive again during the second surge compared with 16 819 (3·27% [3·22-3·32]) of 514 271 who tested negative during the first surge (adjusted RR 0·195 [95% CI 0·155-0·246]). Protection against repeat infection was 80·5% (95% CI 75·4-84·5). The alternative cohort analysis gave similar estimates (adjusted RR 0·212 [0·179-0·251], estimated protection 78·8% [74·9-82·1])."

https://pubmed.ncbi.nlm.nih.gov/33743221/

This paper indicates 95% efficacy due to natural infection for at least seven months in Qatar:

"Reinfection is rare in the young and international population of Qatar. Natural infection appears to elicit strong protection against reinfection with an efficacy ~95% for at least seven months."

https://pubmed.ncbi.nlm.nih.gov/33937733/

Relative risk is still in favor of being vaccinated: "In addition to not knowing the clinical course of reinfection, we do not know the variants' role in reinfection – primarily because they were not known to be “in play” during the study period. Overall, natural immunity is protective. Perhaps not as protective as vaccination. More importantly, vaccination comes with a far lower risk of morbidity (hospitalization) or death."

https://www.acsh.org/news/2021/03/24/how-protective-natural-...

Re: Lasting immunity found after recovery from Covid-19

#320

Post by azinman2 »

chrisco255 wrote: post #173
sjf wrote: post #152

Earlier quoted context omitted.

I am going to assume you are American by the reference to liberty. Every US immigrant is /already/ required to have eight different vaccinations and a negative TB test. They quite literally take your blood before you can become a resident. https://www.uscis.gov/tools/designated-civil-surgeons/vaccin...

Yes, but as I understand it, the EU purports to be a proponent of human rights as well. Immigration to the U.S. is of course, a regulated activity. They can make you take a physical, pay a fee, inspect your background, call your mom and make sure you're a good person, etc, before accepting you as an immigrant. Sure. There's no limits to that, because there's no U.S. Constitutional protection for non-U.S. citizens and…

I'm not sure why you're talking about immigrating to the EU when my understanding is the topic is simply traveling to the EU as a visitor.
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