Here's a hot take that I'm not saying must be true, but is interesting.

So, as we know, people have had success treating cancer using anti-parasitic medicines like Ivermectin and Fembendazole. Weird right? So what if parasites are somehow involved in cancer? Assuming they are involved this could literally be opening up a can of worms with these new "cancer vaccines".

If they make a "cancer vaccine", it will likely target symptoms of the problem, and not the parasite. It would be targeting our bodies' defense mechanism to the parasite since this is creating the tumor. End result, the tumor is gone, but it unleashes a parasite takeover of the human body (demons unleashed in physical form). Would these parasites act like those which can control the host and impact human behavior? It's not unprecedented in the animal kingdom for a parasite to impact the host's mind. Would they make people more susceptible to evil influence?

Maybe it is merely a coincidence that these drugs can fight cancer and parasites. It is possible they work through some other mechanisms that just so happens to also impact cancer. But what if I'm on to something...