Well now you have a control group to compare against.
A high % of people are asymptomatic or just has mild/moderate symptoms. People might not have known what hit them.
Hence people might be tested (now) if they fit the symptoms. Might be tested, and might or might not be classified as Covid-19 without the tests
And that's in countries with a good health system. Maybe some country with hundreds of official cases is already in the millions. Who knows?!
A high % of people are asymptomatic or just has mild/moderate symptoms. People might not have known what hit them.
Hence people might be tested (now) if they fit the symptoms. Might be tested, and might or might not be classified as Covid-19 without the tests
And that's in countries with a good health system. Maybe some country with hundreds of official cases is already in the millions. Who knows?!