Allergic reactions usually become evident very soon after the sting (from a few seconds to half an hour after the sting).Īllergic reactions are classified in four levels, in order of increasing severity: Because an allergic reaction involves antibodies formed during a previous exposure to an antigen, it is not possible to have an allergic reaction after the first sting. In about 1% of the population, repeated stings (or in some cases only two or three stings) may lead to an allergic reaction, also called a general allergic reaction, a systemic allergic reaction, or an anaphylactic reaction. When a honeybee tries to withdraw its stinger, it tears loose from the abdomen, taking the venom gland with it. This means that the worker or queen can withdraw her stinger, and is able to sting again. The stinger of a bumblebee or a wasp has no barbs. The response to a bumblebee sting can differ per incident. Occasionally (in approximately 1% of cases), an allergic reaction against the injected venom develops.
In humans, this generates a short severe pain that then fades away.
When a bee stings, some venom is injected into the body through the stinger. Only bumblebee workers and queens have a stinger, as is the case with honeybees and wasps. In general, bumblebees are larger than honeybees, and hairier than wasps.
There are various subspecies with differing appearances including different colours and patterns. In addition, bumblebees and honeybees are used as pollinators in agricultural and horticultural crops. Bumblebees are found in the natural environment in many countries.
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