How effective is immunotherapy for insect sting allergies?

Immunotherapy for insect stings can reduce your chances of having another severe systemic allergic reaction from 60% to about 5%.

It is not clear exactly how effective the protection against future stings is after the treatment has ended. In about 80 to 90 out of 100 cases, people who were treated will still be protected against systemic reactions even if tests show some remaining immune sensitivity.