Dear readers,

I read more and more that the Chinese Sinovac is not effective against the Delta variant. My Thai wife had an injection of Sinovac. What should we do now? Wait until she can go to a private hospital for Moderna? In the meantime, she can become infected.

And can you just surpass/mix one injection with another? And what if there is another variant, we will have to get an injection every three months? Doesn't seem healthy to me?

See this: https://thethaiger.com/coronavirus/sinovac-not-effective-against-delta-variant-astrazeneca-is

Regards,

Onno

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11 responses to “Reader question: Sinovac not effective against Delta variant, now what?”

  1. FrankyR says up

    Various studies have shown that mixing with vaccines is allowed and probably even increases effectiveness.

    It does concern information from the national government, so some criticism is still required. Because as we now know, there are two types, mRNA and Vector vaccines. Does that mix well?

    But the story seems pretty logical to me. Quote: “Recent British antibody research shows that the combination of a first vaccination with AstraZeneca and a second vaccination with BioNTech/Pfizer protects against severe disease as well as two doses of the AstraZeneca vaccine.”

    But also: “Incidentally, combining vaccines gives a slightly higher chance of short-term, somewhat more intense side effects such as pain at the injection site, fever, muscle pain and nausea”!

    Source: https://www.rijksoverheid.nl/actueel/nieuws/2021/07/06/de-jonge-mix-en-match-met-astrazeneca-is-net-als-twee-keer-astrazeneca-veilig-en-effectief

  2. gore says up

    I would just do nothing, I think all those stories about the Delta variant and the spread will be better than expected. Coincidentally watched the European Championship final yesterday ′′ 90.000 spectators hut, mutje in Wembley, singing, and partying?

    The choice for Sinovac is fine, because conservatively developed vaccine, which does not mess with your DNA.

    The chance of contracting the virus in Thailand is so small that the effectiveness of Sinovac is completely irrelevant. If the chance of contracting a fatal infection is only 0,004% in Thailand, it makes very little difference whether you reduce it by 50 or 75%.

    • Ton says up

      Overall, the chance is indeed very small. But if you unfortunately belong to the infected, it is something else, you halve your chance of dying from it or not, perhaps that chance is even reduced by more than 50% because the vaccination also reduces the severity of the disease symptoms.

    • Rutger says up

      Dear Goort,

      I don't know on what basis you assume that the Delta variant "will be better than expected". Everything shows that the infection takes place much more easily, and the effectiveness of vaccines is lower than with all other variants currently available. In the Netherlands, the number of infections is currently "exploding" because all measures have been put overboard.
      Then some more:
      In the Netherlands, some people think they are completely safe on the day of their second vaccination (thanks to our not so smart actions by ministers). As a result, partially protected people may still become infected. The risk now is that new variants of Delta COVID-19 will emerge, which will actually become resistant to vaccines. (Compare it with stopping a course of antibiotics in pneumonia when the symptoms have disappeared, just as the bacilli become resistant to the antibiotic). We are not yet free from this for the time being!
      Greetings, Rutger

      • gore says up

        Dear Rutgers,

        Infections increase if you start testing more. Do you want to bet that if no one gets tested without symptoms, the number of infections (I prefer to call it positive PCR tests) will decrease?

        What do you see now that is different than a flu virus that mutates as it has done for 50 years?

        The only difference is that on TV, in the media there is an amount of fear about being able to die from something, with a smaller chance of participating in traffic in Thailand.

        Anyway, if people think they should be afraid of this, fine, but I would think it would be better to stop this mass hysteria and learn to live with it, and open up the economy again. More people have probably died in Thailand from poverty, suicides due to desperation, than from Covid-19.

        • Rutger says up

          Dear Goort,

          It has been a while since I was on a wonderful holiday in Thailand, and I must confess that I am not well informed about the current situation there.

          Also, I'm not a doctor, but I'm pretty familiar with COVID and wouldn't compare it to the flu. Due to mutations, it has become much more contagious than in the Wuhan period, and the latter variant, which is very dominant over the earlier ones, also gives a high chance of lung COVID, a long-term disease, in younger age categories (compare the severity with victims of Q fever). You really don't get that with a normal flu.
          Furthermore, I don't understand at all where the idea that this is "a flu" comes from. The Spanish flu was also not an “ordinary flu”.

          • Harm says up

            Hello everyone, the #Sinovac vaxin is not good for protection, we have read in the meantime. Also other vaxins are not suitable for new variants is clear because there is a lot of contamination among the people who have that vaxin. Doesn't matter which one you take. A virus mutates continuously, so just like the flu, you would have to get a shot every time, which then also lags behind the virus, so it is not protected. Also for consideration, the virus is easy to combat with eg IVERMECTIN or HCQ (kind of quinine) and zinc tablets. That together gives me reason not to take MRNA vax which is known as gene therapy in experimental phase… I take little risk, because infection value is 0.15 and therefore little risk especially in warm climate in Thailand. So just eat healthy and enjoy life is my motto. Stay away from sources of infection. Good luck and regards
            Harm

            • Jahris says up

              I totally agree with your latest advice, just live a good and healthy life and stay away from potential hot spots. But HCQ (Hydroxychloroquine) and Invermectin unfortunately do not help against COVID-19. There is no evidence anywhere in the world that this is the case. Using both drugs against Covid would also give too high a chance of side effects. With Invermectin, there are indications that this could slow down COVID, but then take it in very high doses, much higher than has been allowed so far. The responsible health authorities in just about every self-respecting country advise against its use.

    • Fred Kosum says up

      “I would just do nothing, I think all those stories about the Delta variant and its spread will be better than expected. Coincidentally watched the European Championship final yesterday "90.000 spectators hut, mutje in Wembley, sing, and celebrate?"
      The contamination figures in 2 weeks will speak volumes. Bet?

      • John Chiang Rai says up

        That is of course comparing apples with pears, because most of them in England have had their vaccinations for a long time, and Thailand has not even started their vaccination properly.

  3. Jahris says up

    Today I read this article in both the AD and the Parool:

    “To boost immunity against more contagious variants of the coronavirus – such as the delta variant – Thailand will give people who have had a shot with the Chinese Sinovac vaccine a second shot with AstraZeneca. "This should increase protection against the delta variant and to build a high level of immunity against the disease," said Thai health minister Anutin Charnvirakul. The country is therefore the first in the world to announce that it will mix the vaccines.
    Thailand and a number of neighboring countries, including Indonesia, have reported health workers vaccinated with Sinovac becoming ill. Most of the aid workers have received the Chinese vaccine. The AstraZeneca drug has only been available since June.”

    Looking at all the reports (including in The Thaiger), research has already been done and an extra AZ injection on top of Sinovac seems to actually increase protection - assuming that these studies are really reliable. Whether this extra injection will also be available to the general public or only to medical personnel does not seem entirely clear for the time being.


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