Evidence for European presence in the Americas in AD 1021

Re:Evidence for European presence in the Americas in AD 1021 by bregma on Wednesday October 20, 2021 @05:09PM (#28936669)

There is evidence that syphillis came from the Americas. There is evidence it was introduced to the Americas by Europeans. One problem is that it's hard to distinguish teritiary syphillis from tuberculosis or leprosy on bones.

As for Borreliosis, there are many variants of it endemic to Europe and spread by ticks. No evidence that it came from the Americas.

Neither of those spirochetes are zoonotic.

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Re:Evidence for European presence in the Americas in AD 1021 by vanattab on Wednesday October 20, 2021 @05:22PM (#28936830)

Why is a tic biting a human and transferring Borreliosis not considered zoonotic?

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Re:Evidence for European presence in the Americas in AD 1021 by littlestymaar on Thursday October 21, 2021 @04:54AM (#28942010)

My understanding is that if the tick was only a vector between two humans (for instance, malaria isn't a zoonosis, because the mosquito is just transmitting the disease between humans), then it would not be a zoonosis. But in most cases with Lyme disease, the tick is actually transmitting the disease from another animal to a human, therefore it is indeed a zoonosis.[1]

[1]: https://en.wikipedia.org/wiki/Lyme_disease#Transmission

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Re:Evidence for European presence in the Americas in AD 1021 by lostlogin on Wednesday October 20, 2021 @06:53PM (#28937873)

According to everyone favourite source, Lyme disease is zoonotic.

I had never heard the term until today, so take the claim with a pinch.

https://en.m.wikipedia.org/wiki/Zoonosis

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Re:Evidence for European presence in the Americas in AD 1021 by hoseja on Thursday October 21, 2021 @03:18AM (#28941382)

I agree, Lyme disease definitely isn't primarily human.

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