[makaveli121212]

bacteria becoming immune to a vaccine is not because of a mutation...well it kinda is, but its not that simple...bacteria can actually have sex...its called conjugation...one bactreia with a pili (penis) can attach it to another bacteria, and then after replicating RNA, the bacteria share their gentic materials...so a bacteria that wasnt immune before could have gotten a gene to make it immune form another bacteria...bacteria having sex is funny though...actually as ive heard if your penis was as big as a bacterias was, as a percent of body size, it would be about 30 ft long