▁ ▁B ills ▁for ▁mand atory ▁v acc ination ▁have ▁been ▁considered ▁for ▁legisl ation , ▁including ▁California ▁Senate ▁Bill ▁ 2 7 7 ▁and ▁Australia ' s ▁No ▁J ab ▁No ▁Pay , ▁all ▁of ▁which ▁have ▁been ▁str enu ously ▁opposed ▁by ▁anti - v acc ination ▁activ ists . ▁O pp osition ▁to ▁mand atory ▁v acc ination ▁may ▁be ▁based ▁on ▁anti - v acc ine ▁sentiment , ▁concern ▁that ▁it ▁viol ates ▁civil ▁libert ies ▁or ▁reduces ▁public ▁trust ▁in ▁v acc ination , ▁or ▁susp icion ▁of ▁prof ite ering ▁by ▁the ▁ph arma ce ut ical ▁industry . ▁ ▁Effect iveness ▁ ▁Scient ific ▁evidence ▁for ▁the ▁effect iveness ▁of ▁large - scale ▁v acc ination ▁campaign s ▁is ▁well - est ab lished . ▁Two ▁to ▁three ▁million ▁death s ▁are ▁prevent ed ▁each ▁year ▁world wide ▁due ▁to ▁v acc ination ▁and ▁an ▁additional ▁ 1 . 5 ▁million ▁death s ▁could ▁be ▁prevent ed ▁each ▁year ▁if ▁all ▁recommended ▁v acc ines ▁were ▁used . ▁V acc ination ▁campaign s ▁helped ▁er ad icate ▁small po x , ▁which ▁once ▁killed ▁as ▁many ▁as ▁one ▁in ▁seven ▁children ▁in ▁Europe , ▁and ▁have ▁nearly ▁er adic ated ▁pol io . ▁As ▁a ▁more ▁mod est ▁example , ▁in fe ctions ▁caused ▁by ▁Ha em oph ilus ▁influen za e ▁( H ib ), ▁a ▁major ▁cause ▁of ▁b acter ial ▁men ing itis ▁and ▁other ▁serious ▁dise ases ▁in ▁children , ▁have ▁decre