Coronavirus Pandemic – The US faces a Massive Second Wave

The ongoing second wave of the pandemic has been fast and furious. Case in point: At the initial stages of the onslaught, the scientific community had projected the death toll to be around 65K; today, it stands at 276K. Similarly, at the tail-end of the initial surge in June, there were roughly 2.5M cases, exploding to over 14M as of today.

After a remission of the initial surge between July and September, the second wave hit the US. It initially hit the Sunbelt, extending into the middle corridor and on to the Northeast in recent weeks. While the daily cases averaged 38.959 in September, it escalated to 58,743 in October, rocketing to 139,702 in November. The 7-day moving average trendline amply confirms the explosion.  

Though the daily death toll has steadily risen during the second wave, the growth rate has been significantly lower than the initial encounter. For instance, the daily deaths averaged 761 in September, flat-lining in October to 746, and escalating to 1,176 in November. While the recent jump is significant, it is 1.5 times the September toll, compared to 3.6 times in case surge.

The above regression graph makes a case for the tapering death rate. Since the case surge has been outpacing the death rate, the line of best fit has been logarithmic with an r-squared value of 0.981, exceeding the r-squared value of 0.962 from the linear fit. The slope also demonstrates that the death toll has started falling after the intersection point of 10M cases and 205K deaths, forming the logarithmic (curvilinear) tilt.

(Click on the image to enlarge)

Though the US owns 22% of the world's cases and the highest population-case rate in the western world, it has a lower death rate than the worldwide average. Despite a higher positivity rate than most of Europe, it has one of the world's best testing credentials. Due to the on-going second wave in Europe and the US, the active rates continue to climb, whereas the Latin American countries have experienced significant drops.

(Click on the image to enlarge)

In the US, Texas, California, and Florida have been the three hardest-hit states, followed by Illinois and New York. The severity of the initial jolt keeps New York in the top five, with the highest death rate in the country. Lately, Wisconsin has seen a big jump in positivity rate, though Texas, Georgia, and Pennsylvania are also rising fast. Pennsylvania has one of the worst testing records as well.

Today, the US recorded the highest daily death toll of 2,611. Hopefully, Pfizer and Moderna will receive the Emergency Use Authorization (EUA) later in the week so the vaccination could start.

Stay safe!

Data Sources:

https://www.worldometers.info/coronavirus/

Wikipedia -- COVID-19 pandemic in the United States

-Sid Som

homequant@gmail.com