"After successful decoding the meme becomes part of the host's mental structures [mūsu domiņās], and this is called infection. A person who does not remember a meme at all is not infected. A person that does remember a meme but who's behaviour is not affected has thus become a human vector. A person whose behaviour is affected by a meme has been actively infected and can potentially transmit it to other hosts"  

Zviedru zinātnieku aizraujoša, strukturēta doma par mēmēm. Lasīt šeit - The Lifecycle of Memes.