Did it get deleted? Do you have the hn link?
It's a puff piece for Stegenga's new book.
Who is this?
Here is an article about how vaccines cause evolutionary pressure:
https://www.quantamagazine.org/how-vaccines-can-drive-pathog...
And here is a paper about how they mostly don't:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304978/
I feel like it's weird that people say something exists and then other people say no it doesn't without ever typing it in to Google. If you are that uninterested in the topic, why even post? Surely you can't reassure yourself about your knowledge that way.
Edit: Thanks for digging up references though. And I do feel the same way about people asking questions when they’re too lazy to search. In this case I had reasons to do so.
The GP just conflated two wildly different things. A citation is not likely forthcoming.
[1] https://www.ncbi.nlm.nih.gov/pubmed/11485646 > In the Netherlands, as in many other western countries, pertussis vaccines have been used extensively for more than 40 years. Therefore, it is conceivable that vaccine-induced immunity has affected the evolution of Bordetella pertussis. Consistent with this notion, pertussis has reemerged in the Netherlands, despite high vaccination coverage. Further, a notable change in the population structure of B. pertussis was observed in the Netherlands subsequent to the introduction of vaccination in the 1950s. Finally, we observed antigenic divergence between clinical isolates and vaccine strains, in particular with respect to the surface-associated proteins pertactin and pertussis toxin. Adaptation may have allowed B. pertussis to remain endemic despite widespread vaccination and may have contributed to the reemergence of pertussis in the Netherlands.
Most vaccines don't do this, and none of the new vaccines under development do this (that I am aware of, admittedly.) It's historical inertia at this point. But going back at least as far as "since when I was a kid" it's a fundamental point of vaccine design that you aim for things that the microbe has a difficult time evolving away from (highly conserved molecules), and that offers multiple antigen targets.
I can't say that's never deviated from - not letting the perfect be the enemy of the good and what-have-you - but it's the norm.