(pron. vak-seem) Any meta-meme which confers resistance or immunity to one or more memes, allowing that person to be exposed without acquiring an active infection. Also called an `immuno-meme.' Common immune-conferring memes are "Faith", "Loyalty", "Skepticism", and "tolerance". (See: meme-allergy.) (GMG.) Every scheme includes a vaccime to protect against rival memes. For instance: Conservatism: automatically resist all new memes. Orthodoxy: automatically reject all new memes. Science: test new memes for theoretical consistency and(where applicable) empirical repeatability; continually re-assess old memes; accept schemes only conditionally, pending future re:-assessment. Radicalism: embrace one new scheme, reject all others. Nihilism: reject all schemes, new and old. New Age: accept all esthetically-appealing memes, new and old, regardless of empirical (or even internal) consistency; reject others. (Note that this one doesn't provide much protection.) Japanese: adapt (parts of) new schemes to the old ones.