My mother (70s) has had all of her vaccines and boosters and is planning to get the next one offered to her this autumn/winter, and then as recommended after that. Yesterday she told me that lots of friends her age who have had all their shots to date are saying they will stop getting them now. Many have had a prior infection and they believe they have some immunity from that and a lot of them think they have had enough vaccines now and that that will suffice for the rest of their life.
I'm going to venture a guess (it's 100% true
IMO) that it's because they aren't virologists/scientists/WHO/CDC, and because they aren't keeping current/reading a lot on the topic of Covid like we in this group do. Therefore their uneducated thinking on the subject is plain wrong. And I didn't mean uneducated as in a dig against them, I meant it as I said in my first sentence.... they aren't very knowledgeable on the subject (which is not at all surprising to me). And that scares the bejesus out of me because I have to share the planet with them and their actions are affecting all of us.
Another way to think about it is
it's not the same virus after all the mutating it's doing. If it was, Pfizer/Moderna/et al wouldn't need to revise their vaccines to what's currently going around!
We found that those who had battled the BA.1-2 variant of Omicron in early 2022 had a 30-fold higher risk of contracting the BA.5 variant later in the year. That was exactly the opposite of what we, or anyone, would have predicted.
I don't know if I believe this is true as it's stated. Sure, the fact stated may be true (30-fold risk), but their REASON might not be true (
those that had it previously were 30X more likely to get it again). It might be another reason not stated, or maybe not even considered, that there was a 30X reinfection rate. Perhaps it's simply because the virus has mutated soooo much since BA.1-2 till now so there are a lot (30X) more cases.
It's my belief it's because they are mutating to be more infectious. More infectious = more infections. Here's one such article (Paywall but all you need to see is the title, which says it all for me).
Covid-19 Variants Keep Getting More Contagious. Here’s Why.
Scientists say new virus variants are evolving to be better at evading our immune systems’ existing defenses
Source
Does this surprising twist apply to the broader population?
I think it does per my statement above. Today's covid is not yesterday's covid (or last month's or last year's, or next month/year). It's mutating and changing. It's my belief that the 30X isn't about "if you had BA.1-2 you will be at a 30X risk of reinfection"... but more that the virus is changing, like the flu does annually (only covid seems to be doing it just about on a daily basis, unfortunately.

)
What the findings do tell us is that older adults who have had a previous COVID-19 infection shouldn’t rely on that to protect them against reinfection this fall. To protect against severe illness, keeping booster shots up to date is recommended.
Amen and halleluiah!!!
We know the protective value of multiple COVID vaccines does not accumulate like money in a bank account. It’s the recency of our boosters that will determine our degree of protection.
Though imperfect, timely boosters are still our best shields. It’s time to think of them less like our childhood vaccines, where we expect to be protected for long periods of time, and more like annual flu vaccines where we need to be vaccinated for the strain that is circulating
Bolded and underlined part is how the general public needs to think about covid! Only we're not quite at annually since it's mutating so rapidly and spinning off new highly mutated variants.
and can only expect that protection to reduce symptomatic infection, last a few months but — importantly — help keep us out of hospital.
(...)
We still have much to learn about many aspects of COVID-19 — including its lingering health effects and the mechanics of its endless mutations — but we do know one thing: we can’t let our guard down.
theconversation.com
I actually went to the source of your article as that's my preference (linked below). (The source came from the link in your article that says "
We found that those who had battled the BA.1-2 variant of Omicron in early 2022 had a 30-fold higher risk of contracting the BA.5 variant later in the year.")
Things I noted from the sourced article:
- reinfected participants had lower serum neutralizing antibodies to ancestral and Omicron BA.1 (Gemmie's note - It's like I said above... ancestral and the 1st Omi strain aren't the same as what's currently going around (or will go around in the future)
- Our further exploration of humoral and T cell immunity after initial Omicron infection suggested that while many older adults did experience an increase in antibody levels and neutralizing antibodies after one Omicron infection, individuals with reinfections had weak humoral hybrid immune responses. (Gemmie's note - Good reason to stay current on vaccines!)
- Our results suggest that the generation of protective humoral hybrid immunity is influenced by the heterogeneity of immune aging as well as the specific SARS-CoV-2 variant of infection. (Gemmie's note - the red bolded part of the sentence is key)