Sorry, I'm not up with that. But it sounds likely.
Very early on, in February last year Soth Korea were right on to tracking and tracing and testing all close contacts and anyone with minor syptoms - as a result, their data was much lower death rates than the other countries being hit by covid, as those other countries weren't testing as much, whereas Korea were identifying a lot of asymptomatic and low symptomatic cases - they also have a sensational hospital system which would have reduced deaths. Their data was basically 50% asymptomatic, 35% mild, 15 % serious. Korea are more more cautious with hospitalisation, so when other countries caught up with their tracking, tracing and testing, they tended to show slightly less serious - generally about 50% asymptomatic, 40% mild, 10% serious.
When people try to compare the death rate of influenza to covid, the thing they're missing out is that we don't test people for influenza unless they have a serious case of the flu. We don't test close contacts, we don't test people with minor symptoms. If we only tested people who have serious cases of covid - the death rate would be about 10% - like it initially was in Europe, when they were only testing people with serious cases.
