Like you say, if you are over 70 and get it, your mortality rate would be more like 10%, even with these lower numbers.
> This makes a lot of sense as the earliest numbers were based only on people presenting severe symptoms, and huge quantities of people with nCoV are completely and totally asymptomatic.
Isn't another possible explanation that it simply takes very sick people a few weeks to die from it, so if you start counting a week farther back then the confirmed-then-died rate will be higher? (Due to undercounting of people who are going to die from it but haven't yet.)
For comparison, the H1N1 influenza (the most common subtype in 2009) had a fatality rate of 0.45%. In the elderly (65+) studies shown it had a case fatality rate of up to 10% [1].
> This makes a lot of sense as the earliest numbers were based only on people presenting severe symptoms, and huge quantities of people with nCoV are completely and totally asymptomatic.
Isn't another possible explanation that it simply takes very sick people a few weeks to die from it, so if you start counting a week farther back then the confirmed-then-died rate will be higher? (Due to undercounting of people who are going to die from it but haven't yet.)