[ghaff]

I've heard it described as such but, no, it seems to be a distinct if perhaps somewhat related type of vaccine? (UPDATED: It's not.) The company that actually created the vaccine is also unrelated to the company that developed the vaccine that Pfizer is currently distributing for COVID.

[epistasis]

There is no relation to mRNA vaccine tech, this is a traditional style of protein vaccine.

https://valneva.com/research-development/lyme-disease/