Barely 0.2% of mortality in Israel against 12.8% in Bangladesh or 9.9% in Italy… and 4.9% in France. Covid-19 case fatality rates published by the Center for Evidence-Based Medicine at the University of Oxford vary widely across countries. Also in time: from 17.3% of patients diagnosed in the first ten days of January in China, it fell to 0.7% in February, according to the World Health Organization. Why? On paper, things are simple: divide the number of deaths by the number of cases, you will get a “crude death rate”. It is 3 to 4 percent globally, according to the WHO. Which immediately specifies: “The true mortality of the Covid-19 will take time to be fully understood”.
The death rate from a new pathogen is actually very complex to calculate in the midst of an epidemic. However, this is essential data to follow live the evolution of the epidemic, and in particular to judge the extent of the measures to be taken. A mortality rate