▁children ▁and ▁the ▁elder ly . ▁ ▁After ▁inc ub ation ▁for ▁one ▁hour ▁on ▁co pper , ▁active ▁influen za ▁A ▁virus ▁particles ▁were ▁reduced ▁by ▁ 7 5 %. ▁After ▁six ▁hours , ▁the ▁particles ▁were ▁reduced ▁on ▁co pper ▁by ▁ 9 9 . 9 9 9 %. ▁In fl uen za ▁A ▁virus ▁was ▁found ▁to ▁surv ive ▁in ▁large ▁numbers ▁on ▁st ain less ▁steel . ▁ ▁Once ▁surfaces ▁are ▁cont amin ated ▁with ▁virus ▁particles , ▁fingers ▁can ▁transfer ▁particles ▁to ▁up ▁to ▁seven ▁other ▁clean ▁surfaces . ▁Because ▁of ▁co pper ' s ▁ability ▁to ▁destroy ▁influen za ▁A ▁virus ▁particles , ▁co pper ▁can ▁help ▁to ▁prevent ▁cross - cont am ination ▁of ▁this ▁vir al ▁path ogen . ▁ ▁A den ov irus ▁ ▁A den ov irus ▁is ▁a ▁group ▁of ▁vir uses ▁that ▁inf ect ▁the ▁t issue ▁l ining ▁memb ran es ▁of ▁the ▁resp ir atory ▁and ▁ur inary ▁tract s , ▁eyes , ▁and ▁int est ines . ▁A den ov ir uses ▁account ▁for ▁about ▁ 1 0 % ▁of ▁ac ute ▁resp ir atory ▁in fe ctions ▁in ▁children . ▁These ▁vir uses ▁are ▁a ▁frequent ▁cause ▁of ▁di arr he a . ▁ ▁In ▁a ▁recent ▁study , ▁ 7 5 % ▁of ▁ad en ov irus ▁particles ▁were ▁in activ ated ▁on ▁co pper ▁( C 1 1 0 0 0 ) ▁within ▁one ▁hour . ▁Within ▁six ▁hours , ▁ 9 9 . 9