Lyme Disease’s Evil Henchmen: Other Tick-Borne Infections Grow

The final segment in WBUR’s week-long Lyme disease series is not about Lyme disease at all. It’s about the rising threat from what I think of as Lyme’s evil henchmen, rare but dangerous infections that are also carried by ticks and have been known, in the worst cases, to prove fatal.

See the full story, by WBUR’s Steve Brown, here: Emerging tickborne diseases causing concern in Mass. We also posted a recent report on state public health officials’ concern that though these other tick-borne diseases are relatively rare, they’re growing very quickly, roughly doubling in the last year.

Writer Jennifer Crystal

Am I fear-mongering? Oh, yes, and I’m not done yet; I have some excellent help. Read this horrifying tale that appeared in the Boston Globe in May. Written skillfully by Jennifer Crystal, an Emerson College student, it describes a long-misdiagnosed case of what turned out to be not just Lyme disease but co-infections of babesia, ehrlichia and bartonella. She ended up bedridden for two years.

Steve Brown quotes Cape Cod entomologist Larry Dapsis: “These ticks can carry more than one pathogen. In fact, with these nymph stage ticks that are basically the size of a poppy seed, in our research, we find that upwards of 15 percent of these ticks can be carrying Lyme plus one of these other two pathogens.”

Dapsis says anaplasmosis is especially prevalent in the Berkshires; babesiosis is concentrated mainly on and around Cape Cod and the islands (see the map below.)

Jennifer blogs here about co-infection with other tick-borne illnesses on lymedisease.org:

Before tick-borne illness became my way of life, I had never heard of babesia, ehrlichia or bartonella, either. These parasitic infections are difficult to pronounce, let alone spell or comprehend. It’s easy to brush off what we don’t understand as not important, but sweeping these illnesses under the carpet is an egregious error that we cannot afford to make.

A single tick bite can deliver a number of co-infections, the most common being the aforementioned three. Unfortunately, the presence of these coinfections can complicate treatment immensely. Babesia, for instance, which is related to malaria, requires completely different drugs than Lyme. When a Lyme patient doesn’t respond to treatment, it may be due to undiagnosed and untreated co-infections.

It’s time to include co-infections in our Lyme awareness efforts. This is a tall order for words that don’t exactly roll off the tongue. My writing professor, fed up with trying to sound out babesia, finally exclaimed, “I can’t pronounce it. Let’s just call it babelicious.”

To which I would respond: Whatever works for you, professor. Just keep it in mind when you’re in tick territory.

babesiosis map

  • Alexander Davis

    The June 21 New England Journal of Medicine features
    a review article on babesiosis, another disease carried by the deer tick, which
    can be fatal and in some areas in southern New England is now almost as common
    as Lyme disease. The article states that the spread of this disease has been
    fueled by the expansion of the deer population, thus “elimination of deer
    populations sharply reduces the risk of infection but is difficult to
    implement.”  Certainly animal rights
    groups oppose deer herd thinning and point out that the mouse is the source of
    the bacteria. This is true but only immature forms of ticks can feed on mice:
    adult ticks will not feed on rodents because they need blood from larger
    mammals. Without eggs from the adult ticks, there are no immature tick forms.  Thus on Monhegan Island, Lyme disease was
    successfully controlled by eliminating the deer, and this broke the tick cycle.
    The mice are still there. Also, CT expert Dr. Kirby Stafford writes that it is
    doubtful that after deer removal the deer tick can be maintained on medium
    sized hosts like raccoons, which frequently remove ticks by grooming. In
    Bridgeport CT, lowering the deer population 74% resulted in a 92% decrease in
    nymphal deer ticks. In Groton CT the deer population was reduced from 77 per
    square mile to 10 per square mile, and the Lyme Disease incidence decreased by
    83%.