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  1. #1
    NCGrandma is offline Emerald level (3000+ posts)
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    Default Any recent info about length of effectiveness of 2nd booster?

    Now that more folks are getting a second booster of MRNA vaccines, has anyone seen reliable info about how long these maintain their effectiveness? I was surprised that I couldn’t find this on the CDC site, although there was a lot of info about various conditions that should encourage people to get a second booster as soon as possible.

    I got my second Moderna booster in late April, as soon as available. DC (age 50) just got a second Pfizer booster two days ago — today, coworkers were saying they had read that second booster maintain peak effectiveness for only 4 to 8 weeks. (Since we both had unpleasant side effects, that was particularly discouraging!)


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  2. #2
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    wendibird22 is offline Red Diamond level (10,000+ posts)
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    I'll see if I can find it. I just read something that with the current omicron strain the Pfizer booster effectiveness is only a few weeks.

    Here it is: https://www.forbes.com/sites/roberth...h=50b730fe32af
    Mom to two amazing DDs ('07 & '09) and a fur baby.

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  3. #3
    jgenie is offline Red Diamond level (10,000+ posts)
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    Quote Originally Posted by wendibird22 View Post
    I'll see if I can find it. I just read something that with the current omicron strain the Pfizer booster effectiveness is only a few weeks.

    Here it is: https://www.forbes.com/sites/roberth...h=50b730fe32af
    Wow - seems pointless to get a second booster. Wondering if the Moderna boosters stack up the same.

  4. #4
    robinsmommy is offline Sapphire level (2000+ posts)
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    Quote Originally Posted by jgenie View Post
    Wow - seems pointless to get a second booster. Wondering if the Moderna boosters stack up the same.
    Carefully timed these are a super useful tool for travel, busy times of life, local transmission waves, or planning a visit to someone who is unvaccinated (too young or such) or immune compromised.

    They still reduce death risk 78% vs one booster. The gains get smaller as the risk drops with each booster- but still worth it to me.

    My immunity is dropping (IgG a third of what it was) but I am too young for another booster. I would love to be able to get one- reducing long Covid risk is also something I see of value, and boosters likely help with that too.

    ETA- if the federal funding runs out and boosters become a commodity, that is something to consider as well. Hard to say what will happen.
    Last edited by robinsmommy; 05-17-2022 at 04:08 PM.

  5. #5
    NCGrandma is offline Emerald level (3000+ posts)
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    Quote Originally Posted by wendibird22 View Post
    I'll see if I can find it. I just read something that with the current omicron strain the Pfizer booster effectiveness is only a few weeks.

    Here it is: https://www.forbes.com/sites/roberth...h=50b730fe32af
    Thanks! That definitely looks like what DC's coworkers read. Kind of discouraging though


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  6. #6
    hbridge is offline Emerald level (3000+ posts)
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    Quote Originally Posted by robinsmommy View Post
    Carefully timed these are a super useful tool for travel, busy times of life, local transmission waves, or planning a visit to someone who is unvaccinated (too young or such) or immune compromised.

    They still reduce death risk 78% vs one booster. The gains get smaller as the risk drops with each booster- but still worth it to me.

    My immunity is dropping (IgG a third of what it was) but I am too young for another booster. I would love to be able to get one- reducing long Covid risk is also something I see of value, and boosters likely help with that too.

    ETA- if the federal funding runs out and boosters become a commodity, that is something to consider as well. Hard to say what will happen.
    You CAN get one. Immunocompromised CAN get the booster. DC got one a few weeks ago due to immunology!

  7. #7
    robinsmommy is offline Sapphire level (2000+ posts)
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    Quote Originally Posted by hbridge View Post
    You CAN get one. Immunocompromised CAN get the booster. DC got one a few weeks ago due to immunology!
    I am not immunocompromised that I know of. Just not holding immunity well compared to DH. We both were in a university study with blood tests. Neither of us appear to have had Covid yet- I probably had bad flu at the start of the pandemic. IgG was 8800 and probably down more since our test a month ago. His was 22k before his 2nd booster hit.

    So a booster is not an option for me that I know of. Should I get it, if there was a scientific data based way of assigning booster ready status? Probably? Esp given a strong family history of autoimmune issues and how that plays into long Covid. But science seems to be back burnered now.

  8. #8
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    I got my second booster (over 50 and going on an overseas trip soon). No side effects besides a sore arm. I am sure I will have to get more shots as we go through all of this!
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  9. #9
    ged is offline Gold level (500+ posts)
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    Quote Originally Posted by NCGrandma View Post
    Thanks! That definitely looks like what DC's coworkers read. Kind of discouraging though


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    yeah - not the most encouraging. I now feel kinda bad...my parents were getting their second booster. They have been Team Moderna this whole time, so I suggested they get the Pfizer to diversify their protection. I hope it was not a bad suggestion.

  10. #10
    marinkitty is offline Sapphire level (2000+ posts)
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    I got my 2nd booster last month (over 50) and since then I've been exposed to Covid four times that I know of, including someone in my home, and so far so good. I've never had it that I know of. I've had four shots of Moderna. DH also got boosted (also all Moderna) and he's also stayed healthy (he did have Covid in Jan 2021). I've been traveling a lot and I have had only mild reactions to the vaccines (one day of feeling off). DD, who is immune compromised and 19 got her second booster yesterday - she just got back home from college. Her GI doc recommended she go now that we are having another wave locally.

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