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COVID (symptomatic) case fatality rate by age, assuming good resources & system is not overwhelmed.

<20: Very little risk
20-40: 1 in 500
40-60: 1 in 200
60-70: 1 in 50
70-80: 1 in 20
80+: 1 in 8
Risks are 2-3 fold lower in absence of obesity, cancer, & serious comorbidities
If we include asymptomatic infections, the death rates will be 2-3 fold lower, depending on what proportion of COVID infections are asymptomatic throughout. My best guess is 70-80%. But not more than that.
When there was a difference among countries I used S. Korea as probably the closest to truth of a setting with good resources that was not overwhelmed.

Countries like India will likely have much higher rates of system is overwhelmed. Cannot extrapolate.
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