How is talking about vaccines going to help us find a cure for cancer? what type of fallacy is this

here are the list of fallacies

Bandwagon: Bandwagon fallacies occur when a proposition is claimed to be true or good solely because many people believe it to be so.

Hasty Generalization: This type of informal generalization makes an assumption based on a small sample and can lead to stereotypes.

Ad Hominem: Occurs when acceptance or rejection of a concept or product is rejected based on its source, not its merit.

Red Herring: Occurs when someone uses irrelevant information to distract from the argument.

Slippery Slope: When you assume a very small action will lead to extreme outcomes.

False Authority: Assuming that the opinion of an expert in one area should be accepted in another area.