The Quiet Machinery of Repair

One minor side effect of this terrible pandemic is that we have all become more educated on our own immune system.  Looked at objectively, it is a masterpiece of evolutionary excellence. 
The outward signs of infection are normally easy to see – coughing, sneezing and obvious fever warn other humans to keep away, while our own exhaustion makes us less mobile and thus less likely to infect.  The extraordinary havoc wrought by Covid-19 is primarily due to the virus’s ability to make someone contagious even before these symptoms appear.
For additional insights from Dr. David Kelly, listen to the Insights Now podcast.