As of March 2021, Haemaphysalis longicornis was positively identified in which state?

• A. California
• B. Arizona
• C. New Jersey
• D. Florida

Answer: (C)

Haemaphysalis longicornis, the Asian longhorned tick, was first positively identified in the United States in 2017, with the earliest confirmed finding in New Jersey. That initial detection was announced by the New Jersey Department of Agriculture after samples from livestock on a farm in Hunterdon County were identified as the tick. By March 2021, other states had detections, but the state with the earliest positive identification among the options is New Jersey. So, the correct state is New Jersey.