Lyme disease is often spoken of as a standalone illness, the only source of a person’s infection. However, this disease is actually associated with a number of other tick-borne infections, which are called “co-infections”.

When a person is infected with Lyme via a tick bite, there is also a good chance that the bug will also transmit one or more co-infections. And, these simultaneous infections will:

• Affect the patient’s clinical diagnosis

• The type of symptoms the patient exhibits

• The progression and/or severity of the individual’s illness

The coinfections most frequently associated with Lyme are:

• Bartonella

• Babesia

• Ehrlichia

• Mycoplasma

• Anaplasma

• Powassan Virus

While any one of the above infections can cause a serious, complicated illness, some of them can be even more dangerous when grouped with other co-infections – regardless of whether the infections resulted from the same tick bite or different tick bites. This type of grouping is often referred to as a “complex”.

A patient dealing with a Lyme (or tick-borne) complex could exhibit symptoms that are typical of a single infection; symptoms that are uniquely caused by two or more infections working together; or a combination of both types of symptoms – which could indicate both a profound suppression of the immune system, and that the infections are widespread throughout the body.

For a referenced paper on the basics of Lyme disease and its associated co-infections, visit our Lyme Basics For Professionals page.