A recent "The Economist" article (Well Travelled, 13th February 2021) reviews how health status of travellers may be monitored as we deal with COVID-19.  The article describes how good the air is in airplanes, and explains that today's travellers are more concerned about regulations / testing / quarantine issues on arrival, and less so about the safety of actually flying.  

It goes on to describe a variety of efforts underway to develop a digital vaccine passport.  "Such technologies will become common, reckons the world's biggest travel-security firm, International SOS".  

For the full article, click here.

Image:  The Economist