There's a lot of misinformation and conspiracy theories about vaccines in the USA in addition to the valid questions which are equally serious. The Centers for Disease Control (CDC) is currently run by an individual who has superstitions about them, and is actively dismantling the professional efforts which further vaccination. Even if there was a vaccine available on the medical market in the US, because that is what we have in this country, a market for medical care, it's not clear that it would be accessible to everybody or the people who need it. The reason for this is because Americans do not have universal healthcare, and in fact, the President has recently enacted a law that cuts public healthcare for many millions of Americans, which would provide such a vaccine.