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Thread: Flu vaccines are lousy because they are grown in eggs

  1. #1
    Veteran Member bajisima's Avatar
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    Flu vaccines are lousy because they are grown in eggs

    Interesting.

    Researchers have identified one more important reason flu shots don’t usually work very well — it’s because they are grown in eggs.

    Flu viruses mutate every year and it turns out the methods used to make flu vaccines cause them to mutate even more, the researchers found. “How you prepare the vaccine can have profound effects on how humans respond to it,” said Scott Hensley of the University of Pennsylvania, who helped lead the study.

    It’s one more reason the world needs to develop more modern methods of making flu vaccines, says Dr. Anthony Fauci, director of the National Institute for Allergy and Infectious Diseases (NIAID). “We need to get away from the antiquated production model, which the egg is,” Fauci said.

    It’s not a big surprise that eggs are not a great way to make vaccines. Vaccine makers, doctors, immunologists and other experts have known for years that the way flu vaccines are made is slow, clunky and prone to errors. The second problem is how flu vaccines are made. Most of them are grown in eggs. It’s a slow and tricky process, one that takes weeks or months and that can go wrong easily. And because flu viruses are so mutation-prone, the very process of growing them in eggs makes them mutate.

    The mutation may explain why Australia just had a particularly bad flu season, Hensley added.

    https://www.nbcnews.com/health/healt...y-they-n818046

  2. #2
    Happiness is a warm gun Blues63's Avatar
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    Yes, from what I've read, the vaccine for a given year is based upon the strains available from the previous season, which often resurface. However, in Australia, we have had two virulent strains (taut.?) since about June which were not available for the production run of the '17 vaccine.

    Anecdotal:

    I received the vaccine in May and I have been surrounded by those infected for some time now without showing symptoms (approx. 3-4 close associates daily). These strains appear to cause a chest infection within 24 hours and the sufferer goes down quickly and suffers for 2-3 weeks. As the patient recovers it seems to come back with a vengeance and hit them again for a week or so. I couldn't believe it killed a fit young lady in my city.

    Wow.

    For about five years now I have received the vaccine and I no longer catch the seasonal 'flu. About the same time I gave up smoking, so that too has contributed to better overall health.
    Last edited by Blues63; 7th November 2017 at 02:34 AM.
    Thanks from bajisima and Dangermouse

  3. #3
    Senior Member Solitaire Champion, Inspector Parker Champion Red Eft's Avatar
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    Eggs? How archaic. It seems like there would be extra uncontrollable variables....every egg isn't going to be the same.
    Thanks from bajisima

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