I det toårige aktivt kontrollerede forsøg, hvor patienterne blev behandlet med enten Enbrel alene, methotrexat alene eller Enbrel i kombination med methotrexat, var antallet af alvorlige infektioner det samme i behandlingsgrupperne.
In the 2-year active-controlled study where patients were treated with either Enbrel alone, methotrexate alone or Enbrel in combination with methotrexate, the rates of serious infections were similar among the treatment groups.