May cause hypersensitivity, anaphylaxis, or anaphylactoid reactions. Caution should be exercised when used in history of new/recurrent infections, with conditions that predispose to infections, or with chronic, latent, or localized infections (if a serious infection develops, therapy should be discontinued). Use may affect defenses against malignancies. Use with caution in asthma (risk of serious infection), in hematologic abnormalities (decreases in hematologic parameters), or in renal impairment. If possible, should not be used in combination with tumor necrosis factor antagonists. Use caution in the elderly. Use is not recommended in children. Live vaccines should not be given concurrently. The packaging (needle cover) contains latex.