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  • Insect and vector exposure: More than just mosquitoes

NEWS

August 13, 2026

Insect and vector exposure: More than just mosquitoes

FROM THE FIELD: Alex Betnar

When we think about the end of summer hazards on a job site, insects often don’t make the top of the list. Most people see them as more of an annoyance than a real concern. However, insect bites and stings can create serious health risks and lead to unexpected safety hazards on the job.

Whether you’re operating equipment, excavating, surveying, clearing brush, conducting environmental assessments, or working near traffic, insects can be more than just a distraction. A sudden bite or sting can take your attention away from the task at hand and lead to sudden reactions that can put you and those around you at risk.

Why insect and vector safety matters

Insects and other biting pests can affect workers in many ways. Some can transmit diseases, while others can cause painful stings, allergic reactions, or medical emergencies. In many cases, the biggest danger isn’t the bite or sting itself, but the reaction to it. A split-second distraction can be all it takes for an incident to occur.

Construction sites are often an attractive and ideal environment for insects because of factors like standing water, vegetation, disturbed soil, wooded areas, and undeveloped land. Therefore, it’s important to stay alert and take the proper precautions to be aware of insect activity throughout the workday.

Common insect and vector hazards

Some of the most common insect-related hazards workers may encounter include:

  • Mosquitoes that can transmit West Nile Virus and cause irritation, distraction, and allergic reactions.
  • Ticks that may carry Lyme disease and other tick-borne illnesses are commonly found in tall grass, brush, ditches, and wooded areas.
  • Bees that may sting if their hives or nests are disturbed during excavation, tree clearing, utility work, or any other field activities.
  • Wasps and yellow jackets that become more aggressive later in the summer and often build nests near active work areas.
  • Hornets that will aggressively defend their nests and can sting multiple times.
  • Black flies and biting midges that can interfere with visibility and concentration while workers perform tasks.
  • Horseflies and deer flies that deliver painful bites and can trigger sudden reactions or distractions.
  • Severe allergic reactions and anaphylaxis caused by insect stings, and can quickly become a life-threatening medical emergency if not treated immediately.

Reducing the risks of insect and vector exposure

Wear appropriate P.P.E

When practical, wear long sleeves, long pants, gloves, and other protective clothing. Use approved insect repellents and keep exposed skin covered when working in areas with high insect activity.

Inspect the work area before starting

It is essential to assess the worksite for insect nests, hives, standing water, tall grass, brush, and other conditions that may attract insects. Always report, document, and address any concerns before starting work.

Stay focused around equipment and traffic

A sudden bite or sting can distract workers operating equipment, climbing ladders, working at heights, or directing traffic. Stay aware of your surroundings and avoid allowing insect activity to distract you from the task at hand.

Check for ticks daily

Workers who spend time in grassy or wooded areas should inspect themselves regularly for ticks during and after work. Prompt removal and reporting of tick bites can help reduce the risk of disease.

Avoid Disturbing Nests and Hives

Never attempt to remove or disturb bee, wasp, yellow jacket, or hornet nests on your own. Stop work, notify your supervisor, and ensure the area is assessed before work resumes.

Understand Emergency Procedures

Supervisors and workers need to be aware of anyone with severe insect allergies and understand the site’s emergency response procedures. They both must know where emergency supplies, including EpiPens, are located and be prepared to respond if an allergic reaction occurs.

Reassess Conditions Throughout the Day

Insect activity can change quickly due to weather, seasonal conditions, equipment vibrations, vegetation disturbance, or nearby nests. Continue assessing the work area throughout the shift, and if insect activity becomes excessive or creates a hazard, stop work and reassess before proceeding.

Key Takeaway:

On construction sites, insect hazards go beyond just bites and stings. Mosquitoes, ticks, bees, wasps, hornets, and other insects can distract workers, cause medical emergencies, and lead to incidents involving equipment, traffic, and falls. To ensure that everyone goes home safely at the end of the day, it’s important to stay aware of your surroundings, identify insect hazards during workplace inspections, follow safe work procedures, and take preventive measures. Prioritizing safety in our workplaces is essential, and a few simple precautions can make a significant difference. The main focus must always be on ensuring that everyone returns home safely at the end of the day.

Remember: Insect and vector safety is job site safety. Stay aware, stay protected, and look out for one another.

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