Tick Surveillance (IMAGE) Entomological Society of America Caption While the prevalence of Lyme disease and other illnesses spread by ticks has steadily increased in the United States over the past 20 years, a new study of the state of American tick surveillance and control reveals an inconsistent and often under-supported patchwork of programs across the country. For instance, while about two-thirds of tick management programs engage in passive tick surveillance, such as accepting tick samples submitted by the public, only 46 percent engage in routine active tick surveillance, such as focused collection of tick samples in the field. Credit Northeast Regional Center for Excellence in Vector-Borne Diseases Usage Restrictions Maintain attribution License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.