Coronavirus and math lessons
The Denominator Problem There was an interesting op-ed in the WSJ a couple of days ago (see link below) by Eran Bendavid and Jay Bhattacharya from Stanford. They ask if the cost of a lockdown is perhaps higher than the cost of no lockdown. The op-ed is behind a pay wall, so I'll provide a summary of their argument. The authors claim that the commonly assumed coronavirus (CV) death rate of ~1% is inaccurate (i.e. too high) due to the lack of antibody testing to determine the true denominator for the ratio. (The death rate is calculated by dividing the number of deaths, i.e. the numerator , by the number of infected, i.e. the denominator .) In other words, we don't have an accurate count of everyone who has the virus until we do antibody testing of everyone. That's because many people who have the virus develop antibodies and very mild symptoms and never get tested and never get counted as part of the denominator. I suspect when the they calculate the death rate