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No one who got Moderna's vaccine in trial developed severe Covid-19

450 点作者 jakozaur超过 4 年前

22 条评论

inglor_cz超过 4 年前
RNA vaccines have a huge potential in treating cancer as well. Basically, you can whip up a personalized vaccine which wakes the immune system up to the fact that it has a growing tumor on its hands.<p>So far, the success rate is very far from 100 per cent, but the therapy sometimes works even in patients with severe late stage metastatized cancer and, in all likelihood, we will learn how to use it better in coming years.<p>This progress could save way more lives down the line than just those at risk with Covid.<p><a href="https:&#x2F;&#x2F;www.nature.com&#x2F;articles&#x2F;d41586-019-03072-8" rel="nofollow">https:&#x2F;&#x2F;www.nature.com&#x2F;articles&#x2F;d41586-019-03072-8</a>
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dopylitty超过 4 年前
I don’t see it in the article but the majority of the work for this and other mRNA vaccines was done by a lab at the US government NIH which has been working on stabilizing coronavirus spike proteins for years now in collaboration with university labs. Moderna and other companies have supplied the platforms for distributing the mRNA coding the protein. There’s a great lecture [1] from an NIH researcher that covers this history.<p>1. <a href="https:&#x2F;&#x2F;youtu.be&#x2F;xpqfdr9FPWM" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;xpqfdr9FPWM</a>
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JasonFruit超过 4 年前
I was reading about Moderna today, and I found a number of articles from 2017-18 expressing concern about their secretiveness and impatience with both safety precautions and the failures that are inevitable in drug trials, based on the experiences of former employees and science journals. I can&#x27;t deny that makes me nervous. I didn&#x27;t see anything about it after that time, however.
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tim333超过 4 年前
Same with the Oxford &#x2F; AstraZeneca vaccine &quot;No hospitalizations or severe cases of COVID-19 were reported in those receiving the vaccine.&quot; <a href="https:&#x2F;&#x2F;apnews.com&#x2F;article&#x2F;astrazeneca-vaccine-third-cheaper-oxford-c99d26eb2946f6fde45a1edc002ff028" rel="nofollow">https:&#x2F;&#x2F;apnews.com&#x2F;article&#x2F;astrazeneca-vaccine-third-cheaper...</a><p>They all seem quite promising.
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blhack超过 4 年前
Does anybody have a good link for a layman&#x27;s overview of how mRNA vaccines work? Lot&#x27;s of nervousness from people around this, and would love to be able to help quell some of that.
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CodeWriter23超过 4 年前
Wonder what the trial exclusion criteria was...it’s not referenced in this article.
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officialjunk超过 4 年前
note there is not a claim this vaccine prevents infection, only lessens symptoms, meaning you are still contagious.<p>&quot;We all expect an effective vaccine to prevent serious illness if infected. Three of the vaccine protocols—Moderna, Pfizer, and AstraZeneca—do not require that their vaccine prevent serious disease only that they prevent moderate symptoms which may be as mild as cough, or headache.&quot;<p>&quot;Prevention of infection is not a criterion for success for any of these vaccines. In fact, their endpoints all require confirmed infections and all those they will include in the analysis for success, the only difference being the severity of symptoms between the vaccinated and unvaccinated.&quot;<p><a href="https:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;williamhaseltine&#x2F;2020&#x2F;09&#x2F;23&#x2F;covid-19-vaccine-protocols-reveal-that-trials-are-designed-to-succeed&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;williamhaseltine&#x2F;2020&#x2F;09&#x2F;23&#x2F;cov...</a>
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kevincox超过 4 年前
It is presumably good that we will have a variety of vaccines. This way if one of them has unnoticed harmful long-term effects it will only affect a subset of the population.<p>Is there some sort of system like this for flu shots? Or are we injecting a large portion of the population with the exact same stuff?
thisistheend123超过 4 年前
There a lot of comments that are being downvoted just for questioning different aspects of such a vaccine and other related issues.<p>That&#x27;s not what I have come to expect from a crowd of curious people carrying a scientific temper.<p>C&#x27;mon HN. Let&#x27;s answer the questions without downvoting someone to oblivion.
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CyberRabbi超过 4 年前
Why is AstraZeneca asking for exemption from liability claims stemming from their COVID-19 vaccine? <a href="https:&#x2F;&#x2F;uk.reuters.com&#x2F;article&#x2F;us-astrazeneca-results-vaccine-liability&#x2F;astrazeneca-to-be-exempt-from-coronavirus-vaccine-liability-claims-in-most-countries-idUKKCN24V2EN" rel="nofollow">https:&#x2F;&#x2F;uk.reuters.com&#x2F;article&#x2F;us-astrazeneca-results-vaccin...</a>
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mchusma超过 4 年前
FDA says Dec 17 meeting to discuss. This contradicts some earlier opinions that the reason the FDA was taking so long to review Pfizer (Dec 10 scheduled date) was that they were planning to review 2-3 candidates together.<p>For context, scheduling the meeting to review the candidates is running at 5-10% of the development time for these vaccines. 20M vaccines represent about 1&#x2F;3 the elderly population in the US, there are about 1,300 deaths a day right now, and most deaths are in the high risk category. So you can estimate the cost of the delay to be quite high (depending on your assumptions, but hard not to estimate the cost to be &gt;1000 lives). I&#x27;m unsure of any vaccine side effect or release that could be considered worse. Pendemrix caused 1 in 18,000 narcolepsy, which for the 20M at risk who could get the vaccine seems like a good trade-off (if this was as bad as that).<p>Moderna entered phase 1 trials in March. Vaccines entering phase 1 trials have a 33% success rate overall, 85% successful for efficacy. So this is not a case of hindsight bias, this was always reasonably likely to work. And these numbers include issues like enrollment issues, or the diesease dying out (ebola).<p>So lets make some assumptions to see what it would look like to &quot;just approve things for the high risk in a pandemic&quot;:<p>For example, let&#x27;s say that a vaccine maker instead of pushing something 85% likely to be efective pushed through pushed through something 40% likely to work. And for safety, let&#x27;s just assume it&#x27;s going to be 2x worse than the worst vaccine ever, so maybe 1 in 10,000 get narcolepsy. But they still push it through.<p>This implies taking the untested vaccine has a 40% chance of protecting you and 0.1% chance of serious side effect.<p>For the elderly, who at the beginning of the pandemic has a conservative IFR of &gt;10% and let&#x27;s assume a 10% chance of getting it. Not taking the vaccine has something like a 1% chance of death.<p>For the elderly, taking the untested vaccine would in this example would reduce your chance of death by 0.6% but increase the chance of serious disease by 0.1%. For most people, this should be an obvious decision to vaccinate, even using the most pessimistic adaptions possible.<p>It almost sounds like a conspiracy theory, but in the real world Moderna had a working vaccine in March, and it was always statistically likely to work with low relative downside (for some population), and it has been banned the entire time until now.<p>The next pandemic could be completely prevented if we focus our efforts on how to approve vaccine candidates in days not months.<p>Note: I think the bar for requiring a vaccination can&#x2F;should definitely be higher than the bar to lift a total ban on a vaccine.
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ping_pong超过 4 年前
How do they know that participants were exposed to Covid-19? Just simply through statistics?
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zyxzevn超过 4 年前
How does it compare with Vitamin-D?
spullara超过 4 年前
The vaccine was developed in 48 hours (Feb 24th) following China sharing the DNA sequence. How many could we have saved?
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hedora超过 4 年前
The null hypothesis (people with symptomatic covid are as likely to get severe symptoms, regardless of whether they received the vaccine) predicts this many cases with severe symptoms:<p>30 &#x2F; 185 * 11 = 1.7<p>1.7 ~= 0, so the sample size is too small to support the headline.
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aaron695超过 4 年前
As an example of un-intended side effects the vaccine trial I&#x27;m on sets off HIV tests.<p>This obviously means HIV will increase.<p>Plus other things to consider. Like conspiracies. And the fact the cheap HIV test I ordered from China can tell me if I&#x27;m on the placebo or not.<p>With deaths from lockdown blowing up, HIV will explode anyway after shutting do the world economy for so long. But don&#x27;t think it&#x27;ll be smooth sailing politically and with today&#x27;s media it&#x27;s a nightmare.
newdude116超过 4 年前
Thats good but I would not be overly optimistic.<p>Two question since I dont know much about mRNA vaccines<p>1. The mRNA has to express the target Protein for the Anitbodies. If injected, how does this happen? It has to go somehow into the cell to be translated? Or is the delivery vehicle the magic sauce?<p>2. What makes mRNA vaccines so special? What is the difference of injecting the expressed protein sequence directly?
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briefcomment超过 4 年前
But basically no one gets severe Covid-19. I don&#x27;t know anyone who has even tested positive.
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amurale超过 4 年前
<p><pre><code> &gt; No one developed severe Covid-19 &gt; No one developed severe adverse effects </code></pre> (yet)<p>There is a reason vaccine trials normally take several years. I&#x27;ll wait until we&#x27;re a few years into phase IV trials, thankyouverymuch.
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IronRanger超过 4 年前
What was the age profile of the trial? If you fill it with healthy people under 50 during Summer you would expect the same results with a placebo, given the profile of the virus.
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whb07超过 4 年前
Hurray for a vaccine that is &gt; 90% effective on a disease that for those who get it have a &gt; 99% survival rate.<p>Bring on the new overlords.
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philshem超过 4 年前
&gt;&gt;&gt; Anti-vaxxers immediately jump on any report of possible adverse events in a vaccine trial (which are thoroughly investigated, of course).<p>&gt;&gt;&gt; Let’s spare a thought today for the person who signed up for the Moderna vaccine trial, received two placebo shots and died of covid19.<p><a href="https:&#x2F;&#x2F;twitter.com&#x2F;kakape&#x2F;status&#x2F;1333401133260419072" rel="nofollow">https:&#x2F;&#x2F;twitter.com&#x2F;kakape&#x2F;status&#x2F;1333401133260419072</a><p>---<p>edit:<p>Please explain the downvotes.<p>The vaccine volunteer would be alive if he was randomly assigned the actual vaccine, and not two doses of placebo.<p>The tweet is from a respected journalist at Science Magazine.
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