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“For some reason or other – perhaps because of the sudden change from excessive cold to excessive heat – the hard winter was followed by an unhealthy summer. Plague was rife, and neither human beings nor animals were immune. The disease was incurable, its ravages appalling, and in despair of understanding its cause or of foreseeing its end the Senate ordered a consultation of the Sybilline Books. ”

--- Titus Livy. “The Early History of Rome.”

The ancients would be astonished that a man in his 70-s could still be concerned about a 10% chance of dying from a plague.

upd: the real plague of our age is low birth rates.

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Под утро приснилось, что анекдот "Выведите козу" можно привести как пример Kan extension. Надо подумать.

Pray for warm weather.

https://www.straitstimes.com/asia/east-asia/exclusive-qa-with-hong-kong-microbiologist-yuen-kwok-yung-who-helped-confirm

Nobody [in Wuhan] expected the disease could be transmitted from human to human, until it quickly broke out in communities and hospitals.
...

I believe the temperature will have certain impact on the toxicity of the virus because, for example, when we do animal experiments on influenza virus, its toxicity in animals placed in 15 degrees Celsius (59 degree Fahrenheit) will be 10 times higher than in those in 25 degrees Celsius.

However, note that the epidemic has already spread to the southern hemisphere which is about to enter winter, and that could allow the virus to survive and thrive.

Great news!

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Nearly all of these various features had been planned in advance. That is the way I have always worked. I draw a plan and work out every detail on the plan before starting to build. For otherwise one will waste a great deal of time in makeshifts as the work goes on and the finished article will not have coherence. It will not be rightly proportioned. Many inventors fail because they do not distinguish between planning and experimenting.

--- Henry Ford, My Life and Work.