The problem isn’t necessarily the worthiness in searching for a genuine vaccine, but its a bit like and forlorn as seeking the Holy Grail and therefore the wrong focus. And very much the wrong focus if those seeking the vaccine are drug pushers who put profit before people, as they are likely to offer you something that makes you ill not better, as healthy people are bad for business.
Whereas a focus on more tangible things such as sanitation, clean water, healthy eating and exercise in the sunshine to boost the immune system and treatments to sooth and cure an illness once you get it, is more realistic and effective approach as an apple a day keeps the doctor away.