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Guide to different tick species and the diseases they carry

Asian longhorned tick

The Asian longhorned tick is usually found in countries including eastern China, Japan, the Russian Far East and the Korean Peninsula.

Since 2017, the tick has been reported in a handful of U.S. states. Because these ticks are spreading rapidly, they are likely present in other states as well. The scientific name for this tick is Haemaphysalis longicornis.

The tick can spread germs that cause serious human diseases, such as anaplasmosis, babesiosis, ehrlichiosis and rickettsiosis. But the risk of illness in humans in the U.S. from this tick's bite is still unknown.