Mastodawn

Carl T. Bergstrom Jul 6, 2023

Today a friend asked me what was up with #COVID vaccines. Why haven't we been encouraged to get further boosters?

The short answer is that there's a new version coming this fall that targets the now-prevalent XBB.1.5 strain that was not included in previous formulations.

My guess is that this will be made available, but not necessarily recommended, to all US adults. I will be getting it if it is available to me.

https://jamanetwork.com/journals/jama/fullarticle/2807145

This Fall’s COVID-19 Vaccine Will Target Omicron XBB Subvariants—Who Needs to Get It?

This Medical News story discusses the updated COVID-19 vaccines expected in the US this fall.

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[zaphod@::1]#

Jul 7, 2023

@ct_bergstrom
At some point it was claimed the vaccine becomes less and less effective after the first boost.
What happened with that?

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skry

@torbalan @ct_bergstrom It was the mutation of the virus that caused less preventative effect from the vaccines. The next vaccine has a newer strain added to the Omicron of the last batch.