Dear Stephen,
I stumbled across this article: and it got me wondering that if a cow with lyme disease was eaten medium-rare, perhaps it could infect the person eating it? This could explain people getting lyme in non-wooded areas (like Brooklyn, NY).

Stephen’s response:
As far as I know the only way one could get lyme from food is that if an encysted form of the spirochete was consumed and there are many unanswered questions about this. The spirochetes that live in one species cannot live in another without first changing their genome structure. So, researchers found that if they injected spirochetes from a deer into a mouse, the spirochetes died. The spirochetes, in their live form, are species specific. So those in meat could not infect someone eating that meat.
Encysted forms of the spirochetes do exist in the wild, expressed in urine onto the ground, the question no one has answered is what happens when they are ingested by an animal. Given their adaptability, it would seem that while in that encysted form they would be able to alter their genome structure to match the animal that ingested them and then infect it. But no research has been done on it that I am aware of.
As to Brooklyn, lyme spirochetes infect a large range of different animals, including birds and rats, both of which are ubiquitous in Brooklyn, and the spirochetes can be transmitted by a great many other things than deer ticks.
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