So the virus is probably more infectious but mainly asymptomatic and so has a far far lower mortality rate?
The virus is very infectious, natural R is now believed to be 4.0. At the start of the virus in the UK we were debating whether it was 2.5 and Italy was jumping up and down saying it was 3, this is terrible. It's 4.0
Similarly at the start of the pandemic asymptomatic cases were quoted as 20%, then 20 to 80% with experts saying the upper bound was very unlikely to be that high. It was revised upwards to 40 to 50%. Then it was proved it was 70%.
Mortality rate in the developed world, I haven't seen research recently but reckoned to be 1%. Far lower than the 'headline' numbees for the UK.
45,000 deaths in the UK and 7% of antibody positive comes out at 1% as it happens.
The cost for survivors of ICU and even a minority will be large. Potentially hundreds of thousands requiring treatments and change in quality of life for months/years/permanently.