In the News
Bay Journal

Warming climate draws new tick threat into Chesapeake region

Until the 1980s, lone stars were virtually unheard of outside the lower southern states. Lone stars now account for about 95% of all tick observations in the Chesapeake Bay region, according to Holly Gaff, a biology professor at Old Dominion University.

New England’s moose are losing the fight against winter ticks

Climate change has given a tiny parasite a new advantage over the mighty beasts.

Citizen-scientist study fuels launch of first interactive US county map of ticks carrying diseases

Study finds ticks carrying disease-causing bacteria in 116 US counties where they have not been previously documented by CDC.
UCLA Newsroom

Black patients’ Lyme disease often diagnosed late, possibly due to missed signs

A UCLA study suggests that many physicians may not have the knowledge or training to properly recognize how Lyme disease appears on the skin of Black patients.

Emerging infectious disease caused by a new nairovirus identified in Japan

A previously unknown virus that can infect humans and cause disease has been identified by scientists in Japan. The novel infectious virus, named Yezo virus and transmitted by tick bites, causes a disease characterized by fever and a reduction in blood platelets and leucocytes.
Journal of Medical Entomology

A geographic information system approach to map tick exposure risk at a scale for public health intervention

We present a geographic information system (GIS) method for mapping predicted tick exposure risk at a 200 m by 200 m resolution, appropriate for public health intervention. We used drag-cloth sampling to measure the density of nymphal blacklegged ticks (Ixodes scapularis, Say (Acari: Ixodidae)) at 24 sites in Addison and Rutland Counties, VT, United States. We used a GIS to average habitat, climatological, land-use/land-cover, and abiotic characteristics over 100 m, 400 m, 1,000 m, and 2,000 m buffers around each site to evaluate which characteristic at which buffer size best predicted density of nymphal ticks.
Journal of General Internal Medicine

Black-white differences in the clinical manifestations and timing of initial Lyme disease diagnoses

Black patients are less represented in medical textbooks. This underrepresentation may make it more difficult for physicians to recognize the dermatologic manifestations of certain diseases in black patients. For Lyme disease, this may lead to a delay in diagnosis, which may result in black patients presenting more often with disseminated disease when initially diagnosed.

Citizen science provides an efficient method for broad-scale tick-borne pathogen surveillance of Ixodes pacificus and Ixodes scapularis across the United States

Tick-borne diseases have expanded over the last 2 decades as a result of shifts in tick and pathogen distributions. These shifts have significantly increased the need for accurate portrayal of real-time pathogen distributions and prevalence in hopes of stemming increases in human morbidity. Traditionally, pathogen distribution and prevalence have been monitored through case reports or scientific collections of ticks or reservoir hosts, both of which have challenges that impact the extent, availability, and accuracy of these data. Citizen science tick collections and testing campaigns supplement these data and provide timely estimates of pathogen prevalence and distributions to help characterize and understand tick-borne disease threats to communities. We utilized our national citizen science tick collection and testing program to describe the distribution and prevalence of four Ixodes-borne pathogens, Borrelia burgdorferi sensu lato, Borrelia miyamotoi, Anaplasma phagocytophilum, and Babesia microti, across the continental United States.
Relevant Resources
Prevention and Symptoms
US Resources

Companion Animal Parasite Council

Parasite Prevalence Maps

California Department of Public Health

Lyme Disease in California ArcGIS StoryMap

Upstate Medical University

New York Tick Surveillance Dashboard

University of Rhode Island


Cary Institute of Ecosystem Studies

Lyme & Tick-borne Disease

Columbia University

New York City Ticks

Bay Area Lyme Foundation

Citizen Science Tick Maps
Canadian Resources

Bishop’s University

eTick Public Tick Map

Companion Animal Parasite Council

Parasite Prevalence Maps

Canadian Lyme Disease Research Network

Research Projects