▁side ▁effects ▁of ▁v acc ination ▁( e . g ., ▁fe ver ▁or ▁r ash ) ▁may ▁be ▁confused ▁with ▁pro gression ▁of ▁the ▁ill ness . ▁It ▁is ▁safe ▁to ▁admin ister ▁v acc ines ▁to ▁well - app ear ing ▁children ▁who ▁are ▁m ild ly ▁ill ▁with ▁the ▁common ▁cold . ▁ ▁Natural ▁In fection ▁Another ▁common ▁anti - v acc ine ▁myth ▁is ▁that ▁natural ▁in fection ▁produces ▁better ▁imm une ▁protection ▁against ▁contract ing ▁the ▁ill ness ▁in ▁the ▁future ▁when ▁compared ▁to ▁v acc ination . ▁In ▁some ▁cases , ▁actual ▁in fection ▁with ▁the ▁ill ness ▁may ▁produce ▁lif el ong ▁imm unity ; ▁however , ▁natural ▁disease ▁car ries ▁a ▁higher ▁risk ▁of ▁harm ing ▁a ▁person ' s ▁health ▁than ▁v acc ines . ▁For ▁example , ▁natural ▁var ic ella ▁in fection ▁car ries ▁a ▁higher ▁risk ▁of ▁b acter ial ▁super in fection ▁with ▁Group ▁A ▁stre pt oc oc ci . ▁ ▁H P V ▁v acc ine ▁The ▁idea ▁that ▁the ▁H P V ▁v acc ine ▁is ▁linked ▁to ▁increased ▁sexual ▁behavior ▁is ▁not ▁supported ▁by ▁scientific ▁evidence . ▁A ▁review ▁of ▁nearly ▁ 1 , 4 0 0 ▁ad oles cent ▁girls ▁found ▁no ▁difference ▁in ▁te en ▁pre gn ancy , ▁inc idence ▁of ▁sex ually ▁transm itted ▁in fection , ▁or ▁contra cept ive ▁coun sel ing ▁regardless ▁of ▁whether ▁they ▁received ▁the ▁H P V ▁v acc ine . ▁Th ous ands ▁of ▁Americans