Tick bites hit highest levels since 2017 as Lyme disease cases rise due to climate change and expanding tick habitats. Learn ...

Inside Dr. Douglas Norris' lab at the Johns Hopkins Bloomberg School of Public Health sits a healthy stack of envelopes — not with letters inside, but with ticks.

Alpha-gal syndrome is an immune system misfire developed after being exposed to a tick bite. It is rapidly spreading across the United States and globally. Alpha-gal syndrome is actually an allergy to ...