▁to ▁occur ▁in ▁those ▁who ▁had ▁been ▁v acc in ated ▁earlier , ▁supp or ters ▁of ▁v acc ination ▁pointed ▁out ▁that ▁these ▁were ▁usually ▁very ▁m ild ▁and ▁occurred ▁years ▁after ▁the ▁v acc ination . ▁In ▁turn , ▁oppon ents ▁of ▁v acc ination ▁pointed ▁out ▁that ▁this ▁contrad icted ▁Jen ner ' s ▁belief ▁that ▁v acc ination ▁con ferred ▁complete ▁protection . ▁The ▁views ▁of ▁oppon ents ▁of ▁v acc ination ▁that ▁it ▁was ▁both ▁dangerous ▁and ▁in effect ive ▁led ▁to ▁the ▁development ▁of ▁determined ▁anti - v acc ination ▁movements ▁in ▁England ▁when ▁legisl ation ▁was ▁introduced ▁to ▁make ▁v acc ination ▁comp uls ory . ▁ ▁England ▁ ▁Because ▁of ▁its ▁greater ▁ris ks , ▁vari olation ▁was ▁b anned ▁in ▁England ▁by ▁the ▁ 1 8 4 0 ▁V acc ination ▁Act , ▁which ▁also ▁introduced ▁free ▁volunt ary ▁v acc ination ▁for ▁inf ants . ▁There after ▁Parliament ▁passed ▁success ive ▁acts ▁to ▁en act ▁and ▁en force ▁comp uls ory ▁v acc ination . ▁The ▁ 1 8 5 3 ▁act ▁introduced ▁comp uls ory ▁v acc ination , ▁with ▁fin es ▁for ▁non - comp liance ▁and ▁imprison ment ▁for ▁non - payment . ▁The ▁ 1 8 6 7 ▁act ▁extended ▁the ▁age ▁requirement ▁to ▁ 1 4 ▁years ▁and ▁introduced ▁repeated ▁fin es ▁for ▁repeated ▁ref us al ▁for ▁the ▁same ▁child . ▁Initial ly , ▁v acc ination ▁reg ulations ▁were ▁organ ised ▁by ▁the ▁local ▁Po or