Going back to the Black Death in the mid 1300s,  humanity has suffered through a bunch of pandemics. What is the  Black Death ? A bubonic plague pandemic from 1346 to 1353 killed as many as 50 million people, perhaps half the population of Europe. Rats to fleas to the bacterium  Yersinia pestis .  Once affected, this bacterium could also be spread through the air. After 7000 years, there is no consensus of the origin. The most likely first source though was probably Central Asia, more specifically, China over 2600 years ago. There is no direct link yet established, but could a bat have infected a flea to initiate this pandemic? The deadliest recent outbreak struck Madagascar in 2017, killing 170. There are some pandemics that are still here.  For example, malaria has been around throughout history, and this malady had killed perhaps 50-60 BILLION people, about half of humans that have ever lived. COVID-19 has so far killed 7 million , or an average of 1.4 millio...

Looking back in time, my  posting on 28February2020  summarized my return from Thailand: The fearsome factor was that Thailand had the second-most cases of   covid-19   when I left Honolulu on February 12.  Today, it is #9.  No new cases appeared after I arrived in that country.  No one is known to have died. (Interestingly enough, today  Thailand  is #33 in total cases and #143 in cases/million population.) But on  11 March2020 the World Health Organizaton declared the coronavirus to be a global pandemic .   This was the first time that a pandemic was caused by a coronavirus. The Dow Jones Industrial Average dropped 1200 points, the worst since 2008.  The eleven year bull market came to an end. China and Italy were locked down. Tom Hanks posted on Instagram that he and his wife Rita Wilson had contracted this virus.  They were in Australia. Two Utah Jazz players tested positive and the NBA canceled the rest of the se...

Before answering that question, I'll start with something really important.    How to use a N95 mask more than once.     I largely provided this information last week, but it doesn't hurt to repeat by indicating my variation to a  Wirecutter   article. Get seven small paper bags, each big enough to hold a N95 mask.   Write a different day of the week on the bags:  Sunday, Monday, etc. Place a N95 mask in each. Wear the mask of that day, and after doing so, place it back into that bag. This virus is supposed to die after three days of exposure. They say four days should be sufficient, so five is safer.  Seven might be more convenient for there are seven days in the week.  A typical box of N95 NIOSH masks holds 20. A few other points: Moisture, especially from vigorous use working out in a gym could wet your mask.  This is why you use a paper bag because it breathes, unlike a ziplock bag. Place the paper bag near a dry sunny wind...

                                 From  Worldometer  (new  COVID-19 deaths yesterday):          DAY    USA    WORLD     Brazil      India      South Africa June     9    1093     4732         1185        246       82 July    22     1205     7128         1293      1120     572 Aug    12     1504     6556        1242        835     130 Sept     9     1208      6222       1136       1168       82 Oct     21    ...