Tick bites are sending more people to the ER this summer. An expert explains why.

June figures show 229 tick bites per every 100,000 visits to ERs — up from 167 in June 2024 .

Tick bites can cause severe symptoms in people who were bitten by ticks carrying the borrelia bacteria.

Different types of infected ticks can spread other bacteria, viruses and parasites that make people sick.