Costa Rica is now second on the group table with three points, one behind the leaders Colombia. Argentina have drawn both their games so far with Bolivia and Colombia, and are reeling at number three with just 2 points.
Striker Josue Martinez put Costa Rica ahead on the hour when he netted the rebound after Bolivia goalkeeper Carlos Arias parried a shot from Allen Guevara. The 19-year-old Campbell made it two in the 79th shooting from the left under the advancing Arias.
It could have been an even greater victory but Bolivian keeper Carlos Arias saved a 71st-minute penalty from Allen Guevara.