Regarding skiing and the virus and young people vs old people...
I thought this was an interesting data point from Germany... which had a link from Drudge.
https://dnyuz.com/2020/04/04/a-german-exception-why-the-countrys-coronavirus-death-rate-is-low/
more at link...
...
“There has been talk of a German anomaly,” said Hendrik Streeck, director of the Institute of virology at the University Hospital Bonn. Professor Streeck has been getting calls from colleagues in the United States and elsewhere.
“‘What are you doing differently?’ they ask me,” he said. “Why is your death rate so low?”
There are several answers to this question, experts say, a mix of statistical distortions and very real differences in how the country has taken on the epidemic.
The average age of those infected is lower in Germany than in many other countries. Many of the early patients caught the virus in Austrian and Italian ski resorts and were relatively young and healthy, Professor Kräusslich said.
“It started as an epidemic of skiers,” he said.
As infections have spread, more older people have been hit and the death rate, only 0.2 percent two weeks ago, has risen, too. But the average age of contracting the disease remains relatively low, at 49. In France,
it is 62.5 and
in Italy 62, according to their latest national reports.
Another explanation for the low fatality rate is that Germany has been testing far more people than most nations. That means it catches more people with few or no symptoms, increasing the number of known cases, but not the number of fatalities.