Tuesday, April 28, 2020

New Covid-19 Cases in Several Countries

Zach Zachariah Ph.D., M.B.A., Associate Professor Emeritus, Ohio University
April 28, 2020

Around 2:00 PM (ET) today, the number of confirmed Covid-19 cases in the United States surpassed the 1,000,000 mark. U.S. now has one-third of the total reported cases in the world.The death toll as of today is 57,000.[1]  The five-day average (April 24 thru April 28, 2020) of the number of new cases reported in the U.S. is a staggering 30,221. The rate of new cases has plateaued so also the number of deaths reported. Even though the number of new cases reported is not increasing exponentially, it has not yet shown a downward trend. 

 The Financial Times [2] tracks the spread of the new Coronavirus pandemic worldwide and produces charts comparing a seven-day average of data for daily death toll, new deaths, and new cases. This International daily newspaper headquartered in London has made available for free their Coronavirus coverage.  Here is the latest chart on new cases reported from several countries of the world.  

Source of Chart:  Financial Times
An Explanation About the Chart from Financial Times
Linear Scale vs. Log Scale (Click to Play)
  • The charts that most of us are familiar with are linear. The values between two points do not change. The y-axis of this chart from the Financial Times uses the logarithmic scale, which is based on exponents.
  • The video from Vox [3] explains the difference between a linear scare and a log scale. It is based on the number of reported Covid-19 cases, not just new cases.

Some of the highlights:
  • The number of new cases is on the decline for most countries of the world including Italy.
  • Only three countries with the highest total of new cases, the United States, U. K., and Spain, have not shown a decline in the number of new cases.
  • However, the new Covid-19 cases have plateaued in the three countries indicating that the measures taken by the authorities to shut down or mandate a shelter-at-home and asking everyone to cover faces and maintain physical-distancing when outside, have flattened the curve.

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1 comment:

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