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Clarity comments on Open Thread, Jun. 15 - Jun. 21, 2015 - Less Wrong Discussion

5 Post author: Gondolinian 15 June 2015 12:02AM

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Comment author: Clarity 17 June 2015 06:48:29AM *  2 points [-]

this was an unhelpful comment, removed and replaced by this comment

Comment author: Douglas_Knight 17 June 2015 07:04:34PM 2 points [-]

Falciparum (the bad kind) only crossed into humans 5000 years ago (historical time!). But it used to be worse, before the evolution of sickle cell and other defenses (O+ Duffy negative blood, I think). Vivax crossed into humans 35 kya and was probably as bad or worse than falciparum before it evolved to be less virulent.