The number of tick-borne illnesses in the United States is increasing; the number of reported cases of Lyme disease alone have tripled since the 1990s. Newly identified tick-borne pathogens include the Heartland virus, which can be fatal. Species like the Lone star tick — which carries a protein that causes allergic reactions to meat — are expanding their ranges. And there are even new species in the United States; the Asian longhorned tick was first spotted in New Jersey in 2017 and is spreading along the East Coast.

Fortunately, the best way to prevent bites remains the same: Know your ticks and how to avoid them. Here are the most common human-biting ticks in the United States: