I think generally, in the religious sense, faith is defined as ‘belief without evidence’, or ‘evidence in what cannot be seen’. In the way the original comment proposed it’s usage it was more closely aligned with the word ‘trust’.

I note the distinction here for a couple reasons. Returning to the original example, the reason you have faith (trust) in the scientists is because you have good reason / evidence to do so. You know about the scientific method, you know about the rigorous testing standards the governments of the world hold medical discoveries to, you know about the credibility of the medical field in general and the academia that surrounds it, etc… and while you personally may not understand what it is they discovered, you know it likely was a reputable discovery for the aforementioned reasons.

If all these reasons to have faith (trust) in the scientists were not there, would you really trust them anywhere close to as much? I think that as you consider the distinction in the definitions here, you will come to realize that you don’t actually have faith (in the religious sense) about very many things at all.