Monthly Archives: November 2017

The Role of School Nurses in Integrated Pest Management for Public Health

By Meredith Swett Walker. Originally published on Entomology Today, by the Entomological Society of America, November 2017. Republished with permission.

tick cubes and spoon

Tick specimens embedded in Lucite can help school nurses distinguish disease carrying ticks like Ixodes scapularis from other species. Nurses are also provided with a tick removal tool with a web address directing them to online IPM resources for schools. (Photo credit: Kathy Murray, Ph.D.)

School nurses do more than just apply bandages to scraped knees and administer asthma inhalers. They are also health educators, they help control communicable diseases, and they even do some pest management.

Meredith Swett Walker

In the past, the dreaded head louse (Pediculus humanus capitis) was likely the only pest a school nurse needed to worry about. But, with the rise of arthropod-borne diseases like Lyme disease, West Nile, and Zika, nurses increasingly find themselves thinking about tick and mosquito control as well. Bed bugs, meanwhile, are also cause for concern, and as head lice evolve resistance to traditional insecticidal treatments, even these pests require more sophisticated control methods. But school nurses typically haven’t received training in pest ecology or integrated pest management (IPM.)

At Entomology 2017 in Denver, Kathy Murray, Ph.D., of the Maine Department of Agriculture, Conservation, and Forestry presented her work with the Northeast School Integrated Pest Management Working Group to engage school nurses in IPM for public health pests in schools. This project aims to give school nurses the tools, resources, and training that they need to promote and support IPM policies in schools. The work was endorsed by the National School Nurse Association and supported by the Northeastern IPM Center.

In the last 15 years, many states have started requiring schools to practice IPM. This may seem odd, but a school campus is essentially a large public property, and any property, be it a building or open space, has pests. Usually, IPM efforts in schools focus on facility managers or custodians. But school nurses deal directly with the effects of these pests on students and can be an important addition to the IPM team.

In many public schools, resources are spread thin. Facility managers may not always have the budget for the labor or materials necessary for effective IPM. But when facility managers and nurses come together to ask administrators or school boards for more resources for IPM, their requests have more heft, says Murray.

New England Nurse Conf 2017 table

The Northeast School Integrated Pest Management Working Group has presented its project to engage nurses in IPM at nursing conferences. (Photo credit: Kathy Murray, Ph.D.)

In the Northeast, ticks are a major concern, particularly Ixodes scapularis (also known as the blacklegged tick or the deer tick), which transmits Lyme disease. Students may come in with ticks they picked up at home or can even pick up ticks on the school grounds. The project supplies school nurses with a tick removal tool, as well as actual ticks embedded in Lucite to aid in distinguishing disease-carrying species from non-vectors. When nurses learn more about tick ecology, they can help identify potential tick habitat on campus and work with facility managers to get it removed.

Mosquito bites themselves are not a major concern for school nurses, but arboviruses like Zika or West Nile are. When nurses know more about the behavior and ecology of mosquitoes, they can help identify mosquito breeding sites on campus, such as small pockets of standing water, and work with facility managers to address them. Where arboviruses are a serious concern, nurses may advocate for outdoor sporting events to be scheduled to avoid peak mosquito activity periods like dusk.

Murray found one health-pest relationship that many nurses were unaware of: the connection between cockroaches, mice, and asthma. The fecal material and urine of these pests are potent asthma triggers. Unfortunately, schools are a prime habitat for mice and roaches. There is food present in the cafeteria and often the classroom. In addition, school buildings are typically unoccupied at night, when mice and roaches are most active. Some research has even shown higher levels of pest-related allergens in school buildings than in the average student’s home. If nurses are concerned about asthma attacks at school, managing pests may help.

In her presentation at the Entomological Society of America’s 2017 annual meeting, Murray made the case that school nurses are often at the front lines of pest-related public health challenges. They can also be essential bridges to the wider community. When confronted with a pest problem, “nurses would like to have some solid, research-based, concise information—in multiple languages” that they can share with students’ families. The IPM project is working to provide that. While some school nurses may have never envisioned IPM as part of their job description, Murray says she has found the school nurses she works with to be interested in IPM and “very passionate about protecting student’s health.”

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Meredith Swett Walker is a former avian endocrinologist who now studies the development and behavior of two juvenile humans in the high desert of western Colorado. When she is not handling her research subjects, she writes about science and nature. You can read her work on her blogs Pica Hudsonia and The Citizen Biologist or follow her on Twitter at @mswettwalker.

Sandbox or Litterbox – You Decide

Raccoons defecate in communal sites, called latrines. Raccoon feces usually are dark and tubular and have a pungent odor. – from Raccoon Latrines: Identification and Clean-up

Raccoons are pretty cute, but you really don’t want them pooping on the property. Photo: Nell McIntosh

When I was younger, raccoons were my favorite animal. It was hard to resist their clever little hands and cute bandit masks. My stuffed raccoon was named Rickie. Even when I was old enough to learn about rabies, my love didn’t wane. But then, when taking a wildlife rehabilitation workshop, I learned about Baylisascaris procyonis (raccoon roundworm), which is passed in raccoon feces. They recommended using a blowtorch to kill the eggs of this intestinal parasite which can enter the human eye and nervous system. The cuddly raccoon lost its place in my heart.

My love/hate relationship with raccoons came to mind when I saw the CDC has released a fact sheet on raccoon latrines and Baylisascaris procyonis. In it, they state “Young children or developmentally disabled persons are at highest risk for infection as they may be more likely to put contaminated fingers, soil, or objects into their mouths”, but fail to point out that sandboxes can serve as a raccoon latrine.  (They do state it as a possibility here.) Of course, cats, which carry their own suite of parasites, are more likely to use sandboxes as their own personal litter box, so it is good IPM to prevent all types of animals from accessing your sandy play areas.

The easiest way to keep sandboxes from becoming litter boxes is to not have any sandboxes at all.

The idea is good, but the implementation is lacking. Without securing it, animals can easily slip under the tarp. Photo: Joellen Lampman

Bu, if you believe, like so many, that there are sensory and group play opportunities with sandboxes (just Google “sand play activities”), then there are steps you can take to prevent animals from gaining access.

  • Keep sanitation a priority to avoid attracting wildlife – ensure that trash is cleaned up and put in a sealed container at the end of each day. (This will also help with other pests such as rats and yellow jackets.)
  • Have a “no food in the sandbox” rule – there is no need to provide an enticement for local animals to check out the box.
  • Pest proof your buildings (including outbuildings) to reduce den sites.
  • Have a solid box bottom  – not only will this help prevent sand loss, but will prevent animals from burrowing in from underneath.
  • Have a durable cover on your box and make sure it is only uncovered during playtime.

    Sandbox with cover rolled back. Photo: Gil Garcia

    Tarp ties on the sandbox hold the tarp securely in place. Photo: Gil Garcia

 

 

 

 

 

 

If you find a latrine, check out the CDC fact sheet that includes information on cleaning it up while protecting your health. (Spoiler alert: they also recommend using a propane torch as chemicals will not kill the eggs.)

Just a note that raccoon latrines can be found in other areas, including (yikes!) inside buildings. Be sure to pest proof your buildings to prevent raccoons (and squirrels and bats and birds) from making your building their new den. To keep wildlife out of your buildings and discourage them from your grounds, visit the NYS IPM Program web page: What’s Bugging You: Wayward Wanderers.