European paper wasp possesses a sting used for defense capable of delivering a neurotoxin to humans. The toxin can cause pain, swelling, redness, and itching at the sting site. Though effects are typically mild and temporary, severe stings may lead to nausea, headache, and in rare instances, muscle spasms. Optimum treatment involves washing the area and applying cold packs to alleviate symptoms.

European paper wasp has a venom that can range from mild to severe in its effects. When it stings, the toxin is injected into the victim, causing pain, swelling, and in rare cases, more serious reactions such as allergic responses. Humans, household pets like dogs and cats, as well as smaller mammals, may all suffer from the sting of european paper wasp. The reaction to the sting varies depending on the individual's sensitivity and the number of stings received.

European paper wasp commonly sting humans when threatened or disturbed, especially near their nests. They possess a sting and venom designed for defense. Stinging typically occurs due to perceived threats from human activities. After stinging, european paper wasp does not die unlike some Hymenoptera, and can sting multiple times. The impact on humans ranges from mild irritation to severe allergic reactions. Only female european paper wasp can sting, as males lack a stinger.

European paper wasp tend to build their nests in areas frequented by humans such as eaves or attics. Humans inadvertently pose a threat to these nests through ordinary activities. When european paper wasp feel their nest is in danger, they might respond defensively and sting. While for most, a sting is just a painful nuisance, it can be more problematic for those with allergies or sensitivity to stings.

Preventing european paper wasp issues involves discouraging them from nesting near human dwellings. This can be done by sealing potential nesting spots, ensuring garbage is covered to not attract them, and maintaining regular inspections of areas where they might nest. Technology such as ultrasonic repellents can also be effective in deterring european paper wasp from establishing nearby nests.

After an encounter with european paper wasp, the immediate step is to wash the affected area with soap and water to prevent infection. Apply cold compresses to reduce swelling and discomfort. Over-the-counter products designed to soothe bites and stings can also be helpful. If a sting occurs, monitoring for signs of an allergic reaction is crucial. During recovery, avoiding scratching and further irritation of the site is important to aid the healing process. Consult professional medical advice if severe reactions occur.