Lyme With a Side—or Two—of Babesia: The Most Common Co-Infection that is Frequently Missed

Babesia parasites inside red blood cell

Written by: Wendy Adams, Research Grant Director & Advisory Board Member, Bay Area Lyme Foundation

Unless you’ve been living under a rock for the last few years, you’ll have learned that tick-borne diseases are on the rise across the United States. Many theories exist as to why this is the case. However, most scientists that study ticks and their habitats agree that a combination of reasons—including climate change and human encroachment into tick habitats—are at least partially to blame.

Although Lyme disease (caused by the bacterium Borrelia burgdorferi) is the most common disease that humans acquire from tick bites, ticks can unfortunately transmit several other bacteria, viruses, and parasites to humans. Multiple infections can even be transmitted during the same bite. The confusing and overlapping disease symptoms caused by multiple infections makes it extremely difficult for doctors to recognize, diagnose and treat the different infections.