Severe damage. This can include life-threatening allergic reactions, transmission of serious diseases, or insects that have particularly painful or harmful bites or stings.

After being stung by the northern yellow bumble bee, most individuals typically experience symptoms such as local pain, redness, swelling, and itching at the sting site. In some cases, hives or rash may also develop around the area. Some individuals may experience severe allergic reactions, also known as anaphylaxis, which can cause symptoms like difficulty in breathing, wheezing, rapid heart rate, nausea, weak pulse, unconsciousness, or even shock. It's important to note that the severity of the symptoms can vary depending on the individual's sensitivity and the number of bites or stings received. If you are concerned about a specific bite or sting or if symptoms persist or worsen, it is recommended to consult a healthcare professional for proper evaluation and treatment.

It's crucial to remove the stinger as soon as possible if it's left behind after a northern yellow bumble bee sting, by gently scraping it out with a flat-edged object. Applying cold compress to the site of sting could help to reduce swelling and relieve pain. It is also essential to keep the area clean to avoid infection.

In the case of severe allergic reactions like difficulty breathing, dial 911 or seek immediate medical help. Severe reactions to northern yellow bumble bee stings can be life-threatening and require immediate medical attention. Remember, it is always best to seek advice from a healthcare professional when dealing with bites or stings, especially if you are unsure of the type of insect or the person's medical history.

Avoid disturbing the habitats of northern yellow bumble bee. They are typically less aggressive when not provoked.

Wearing protective clothing including long pants, shirts with long sleeves, closed shoes and gloves when gardening or entering areas where northern yellow bumble bee thrives could help in preventing stings.

Avoid wearing perfumes, scented soaps or lotions which might attract northern yellow bumble bee.

Using insect repellents might help to repel northern yellow bumble bee, but they should be used sparingly and cautiously as per manufacturer's guidelines.

If a northern yellow bumble bee's nest is found near human habitat, professional pest control services can relocate it safely, reducing the chance of stings.