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Originally Posted by sebastian_dangerfield
First, there was a study out of China that noticed people with O blood type did better than those with A or B or AB. There was actually a laddering of severity established based on blood type. Correlation, of course. But that's all we've got.
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I don't know the study, but what you've said is not inconsistent with a genetic basis, but hardly a strong sign of it.
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Then you have the gross statistics about who's done well and who's done poorly. The big story is the old and the compromised do badly and a few of the young and healthy also do badly. What's not discussed is that a lot of old and unhealthy people do quite fine with it.
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Please note: Everything you say in this paragraph suggests that non-genetic factors are much more important, the opposite of what you were suggesting.
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Finally, you have the fact that different groups of people have different sets of presentations. They've teased out data showing common responses from diarrhea to pinkeye to fever that tend to run together. (I forget the typical groupings found). This would suggest that the virus has different impacts on people regardless of health, age, etc. That could only be genetic.
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No, quite the opposite. It could just be that the disease takes a different course in different people for non-genetic reasons.
