It was less virulent and more deadly than some people thought originally. There were estimates that the factor of real cases compared to positive test result wa

It was less virulent and more deadly than some people thought originally. There were estimates that the factor of real cases compared to positive test result was really high - that a lot of people were infected but asymptomatic. Turned out to be wrong. So the "let it spread, it can't be stopped" strategy turned out to be wrong and caused a lot of deaths. The countries who had more serious isolation measures had a lot lower amount of deaths.