Full quote -
“I have told you that the spirits of darkness are going to inspire their human hosts, in whom they will be dwelling, to find a vaccine that will drive all inclination towards spirituality out of people’s souls when they are still very young, and this will happen in a roundabout way through the living body. Today, bodies are vaccinated against one thing and another; in future, children will be vaccinated with a substance which it will certainly be possible to produce, and this will make them immune, so that they do not develop foolish inclinations connected with spiritual life — ‘foolish’ here, of course, in the eyes of materialists.”
Both here and on other forums, I've read posts of people saying that they feel less spiritually connected after the jab.
Steiner is perhaps the most prolific and accurate mystic of the past 100 years. His forecasts have been uncanny and spot on accurate in all instances. I've never doubted a single thing he has had to say.