Series: Tick-Borne Diseases In Wisconsin

Ticks are a familiar nuisance around Wisconsin, but they also pose a growing health risk to the humans they feed on, exposing them to disease-causing pathogens. Deer ticks have spread across much of the state in recent decades, feeding on wildlife along with people and their pets. These ticks transmit Lyme disease, and the state is facing a persistently high rate of infection. Ticks spread other illnesses as well. Entomologists and public health researchers are investigating the relationship between ticks, their hosts and the surrounding environment, but continue to emphasize prevention as the best way to reduce infections.
 
Wisconsin is experiencing an upward trend of both deer ticks and Lyme disease. Scott Gordon of WisContext discusses how there's still a lot to learn about how widespread infections are in the state.
UW-Extension entomologist PJ Liesch said Wisconsin is "one of the hot spots of tick activity in the U.S." But, he stresses it's still possible to enjoy the outdoors.
Wood frog
The El Niño that started in early 2015 and is affecting global weather patterns could be less than idyllic for Wisconsin wildlife adapted to snowy conditions.
A new center at the University of Wisconsin-Madison will be researching the spread of new diseases in Wisconsin and the upper Midwest region carried by ticks and mosquitoes.
The Midwest is home to over a dozen tick species. While only a few types are encountered regularly by people and pets, the medical concerns posed by some species can be quite significant.
The Lyme disease incidence rate in Wisconsin has been well above the national average since at least 2005, and is rivaled by only a handful of other states. But these numbers don't represent a definitive count.
While thoughts might be turning to filling the cooler with cold beverages and packing enough charcoal for the grill, there's another aspect to the season that demands attention: tiny ticks.
One enduring myth about ticks is that these little bloodsucking creatures hang around on tree branches and leaves, waiting to drop down on an unsuspecting feast. Ticks don't dive-bomb their intended meals, but they do engage in behavior called "questing."
The number of deer ticks and other species can vary each year, and weather conditions can play an important role in day-to-day exposure risks, but the state remains a hotspot for Lyme disease and other tick-borne illnesses.
The tiny deer tick is an incredibly effective vector for disease. It's made Wisconsin one of North America's hotspots for Lyme disease, and is spreading several other pathogens dangerous to people.