Which insect is a common cause of anaphylaxis?

The correct answer is bees, as they are well-known for being a significant cause of anaphylaxis due to their venom. Anaphylaxis is a severe allergic reaction that can occur in response to insect stings, particularly from honeybees and bumblebees. The venom of these insects contains proteins that affect multiple systems in the body, leading to symptoms such as swelling, difficulty breathing, hives, and even shock.

Bees have a unique role because their stings can introduce allergens directly into the bloodstream, making it possible for individuals with allergies to experience a rapid and severe reaction. Understanding the nature of these reactions is crucial for EMTs, who must be prepared to recognize and treat anaphylaxis effectively when it occurs after an insect sting.

While other insects can cause allergic reactions or discomfort, such as horseflies, deerflies, and gnats, they are not as commonly associated with anaphylaxis. The severity and immediacy of a reaction to a bee sting make bees a primary concern in both emergency medical situations and allergy management contexts.