▁where ▁her d ▁imm unity ▁is ▁in effect ive . ▁According ▁to ▁Jenn ifer ▁Reich , ▁those ▁parents ▁who ▁believe ▁v acc ination ▁to ▁be ▁quite ▁effective ▁but ▁might ▁prefer ▁their ▁children ▁to ▁remain ▁un v acc in ated , ▁are ▁those ▁who ▁are ▁the ▁most ▁likely ▁to ▁be ▁convinced ▁to ▁change ▁their ▁mind , ▁as ▁long ▁as ▁they ▁are ▁approached ▁properly . ▁ ▁Common ▁them es ▁While ▁some ▁anti - v acc ination ists ▁open ly ▁den y ▁the ▁improvements ▁v acc ination ▁has ▁made ▁to ▁public ▁health , ▁or ▁succ umb ▁to ▁consp i racy ▁theories , ▁it ▁is ▁much ▁more ▁common ▁to ▁c ite ▁concerns ▁about ▁safety . ▁As ▁with ▁any ▁medical ▁treatment , ▁there ▁is ▁a ▁potential ▁for ▁v acc ines ▁to ▁cause ▁serious ▁comp lications , ▁such ▁as ▁severe ▁all erg ic ▁re actions , ▁but ▁unlike ▁most ▁other ▁medical ▁inter vent ions , ▁v acc ines ▁are ▁given ▁to ▁health y ▁people ▁and ▁so ▁a ▁higher ▁standard ▁of ▁safety ▁is ▁expected . ▁While ▁serious ▁comp lications ▁from ▁v acc in ations ▁are ▁possible , ▁they ▁are ▁extremely ▁rare ▁and ▁much ▁less ▁common ▁than ▁similar ▁ris ks ▁from ▁the ▁dise ases ▁they ▁prevent . ▁As ▁the ▁success ▁of ▁imm un ization ▁programs ▁increases ▁and ▁the ▁inc idence ▁of ▁disease ▁decre ases , ▁public ▁attention ▁sh ifts ▁away ▁from ▁the ▁ris ks ▁of ▁disease ▁to ▁the ▁risk ▁of ▁v acc ination , ▁and ▁it ▁becomes ▁challeng ing ▁for ▁health ▁authorities ▁to ▁preserve ▁public ▁support ▁for ▁v acc ination ▁programs