New virus found in invasive tick species in U.S.

In 2017, a previously undocumented tick species was first identified in the United States. Within a few years, the tick has been confirmed in more than two dozen states, marking a rapid geographic expansion across the country. The spread has prompted a coordinated response from federal and state health agencies.

Public health officials report that the tick is a competent vector for several pathogens, including bacteria that cause Lyme disease and other tick‑borne illnesses. Surveillance programs have intensified, with state health departments conducting field collections and laboratory testing to map the tick’s distribution and assess infection rates. The Centers for Disease Control and Prevention has issued guidance for clinicians and the public on prevention, early detection, and treatment of tick‑borne diseases.

The continued spread underscores the importance of ongoing monitoring and public education. Authorities are working to expand surveillance networks and to provide resources for individuals in affected areas to reduce tick exposure and seek timely medical care.