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Yeah, influenza type B 'Yamagata' has been mostly gone since 2020, but that's not necessarily because of COVID, but just because the virus is so variable. In fa
by PreInternet01 2y ago
Yeah, influenza type B 'Yamagata' has been mostly gone since 2020, but that's not necessarily because of COVID, but just because the virus is so variable. In fact, it's highly unlikely for an influenza sub-type to hang around for more than 18 months.
In Europe, for 2024/2025, types A 'Victoria' and 'Thailand' (with type-B 'Victoria' and 'Yamagata' following closely, so you can see it's still there-ish) are expected to be the most virulent. but, as always with influenza, this might be wrong, which means vaccination might be slightly less effective, although still beneficial.
- jsnell 2y agoIn Europe, the 2024/2025 vaccine composition guidance[0] recommends excluding B/Yamagata, because it hasn't been detected since 2020 and "no longer seems to pose a threat to public health". That doesn't look like "still there-ish". [0] https://www.ema.europa.eu/en/news/eu-recommendations-2024-2025-seasonal-flu-vaccine-composition https://www.ema.europa.eu/en/news/eu-recommendations-2024-20...
- PreInternet01 2y agoWell, the strains that I listed are in the Sanofi Quadrivalent vaccine that is most popular in Europe (and being administered right now) as far as I know...
- taeric 2y agoI'm confused on the reporting. The push from folks I'm seeing is definitely inline with social distancing and masking being the big wins. I thought, during the time, it was also felt that different respiratory viruses effectively out compete each other? Not seeing that mentioned much, at the moment. I'm also somewhat terrified that folks seem to be taking this in the anti-vaccine direction.
- timr 2y agoYeah, people who are making claims about social distancing, etc. are wildly leaping to conclusions. There are a number of more plausible / simpler alternatives. For example: the innate immune system gets activated whenever you have an infection. This is the most primitive form of immunity that you have, and is blunt (fever, snot, generic immunoglobulins, etc.) but effective at warding off pathogens of any sort. It's why you don't often get two different upper respiratory infections at the same time.
- wetpaws 2y ago[dead]
- worstspotgain 2y agoWhenever there's any positive news on masking, there's always online pushback under some theory or another. I'm not saying GP here is necessarily guilty of anything, of course.
- reverendjames 2y agoThe Yamagata was my favorite strain.