▁teach ▁about ▁v acc ination ▁in ▁a ▁manner ▁consistent ▁with ▁scientific ▁evidence , ▁several ▁have ▁fac ulty ▁who ▁seem ▁to ▁stress ▁negative ▁views . ▁A ▁survey ▁of ▁a ▁ 1 9 9 9 – 2 0 0 0 ▁cross - section ▁of ▁students ▁of ▁Canadian ▁Memorial ▁Chi rop ract ic ▁College ▁( CM CC ), ▁which ▁does ▁not ▁formally ▁teach ▁anti - v acc ination ▁views , ▁reported ▁that ▁fourth - year ▁students ▁opposed ▁v acc ination ▁more ▁strongly ▁than ▁did ▁first - year ▁students , ▁with ▁ 2 9 . 4 % ▁of ▁fourth - year ▁students ▁oppos ing ▁v acc ination . ▁A ▁follow - up ▁study ▁on ▁ 2 0 1 1 – 1 2 ▁C M CC ▁students ▁found ▁that ▁pro - v acc ination ▁att itudes ▁heavily ▁pre domin ated . ▁Stud ents ▁reported ▁support ▁rates ▁r anging ▁from ▁ 8 4 % ▁to ▁ 9 0 %. ▁One ▁of ▁the ▁study ' s ▁authors ▁proposed ▁the ▁change ▁in ▁attitude ▁to ▁be ▁due ▁to ▁the ▁lack ▁of ▁the ▁previous ▁influence ▁of ▁a ▁" sub group ▁of ▁some ▁char ism atic ▁students ▁who ▁were ▁en rolled ▁at ▁C M CC ▁at ▁the ▁time , ▁students ▁who ▁champion ed ▁the ▁Pal mer ▁post ul ates ▁that ▁advoc ated ▁against ▁the ▁use ▁of ▁v acc ination ". ▁ ▁Policy ▁positions ▁The ▁American ▁Chi rop ract ic ▁Association ▁and ▁the ▁International ▁Chi rop ract ic ▁Association ▁support ▁individual ▁exem ptions ▁to ▁comp uls ory ▁v acc ination ▁laws . ▁In ▁March ▁