Yes. I did a test last year to check for antibodies generated through the vaccine and antibodies generated through an infection.
Vaccine was positive, infection negative.
"If all you have is a hammer, everything looks like a nail."
Frontend frameworks like React are used everywhere. For real web applications like Facebook, they totally make sense. But for a lot of other projects, they don't because those projects do not have a complex UI/UX and so the framework adds more complexity than needed.
Happy for any feedback.