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—Contraindications to Immunotherapy
| Unstable or uncontrolled asthma |
| Pregnancy (maintenance injections may be continued during pregnancy) |
| Use of β-blockers |
| Concurrent presence of immunodeficiency or autoimmune disease or malignancy |
| Lack of adequate resuscitation equipment and/or personnel |
| Young children (< 5 y) |
| Inability to comply with established immunotherapy protocols |
