This article:
https://medium.com/@tomaspueyo/coronavirus-act-today-or-people-will-die-f4d3d9cd99ca
is trying to make the case for shutting down everything yesterday. Along the way it addresses ways of guessing the true number of infections from the reported cases and reported deaths. It is filled with lots of data from China and other places. It is depressing and hopeful at the same time.
P.S. I've never heard of this guy or the website. Does anyone have thoughts about their trustworthiness?
Medium is a site that has all sorts of stuff of all sorts of levels of trustworthiness. But this article looks extremely good and well-researched: it fits with everything else I know from the available data about how cases have slowed down dramatically in places that implement restrictions, with a time lag of about 2 weeks. This is exactly the sort of thing I wanted to find in order to convince myself that
@innonimatu and
@hobbsyoyo are more likely to be right than my own dire prediction from a couple days ago.
Here's my understanding of what this article is saying.
tl;dr is that freaking out and canceling everything actually works pretty well. It may not seem like it at first, but it starts working immediately, you just don't know it at first.
There's a time lag of about 10-14 days between when this starts and when the number of diagnosed cases suddenly leaves its exponential trend and slows down quickly, because a lot of people had caught it already before the new measures but weren't showing symptoms or getting tested. Tracing back the likely time of infection, you find that the number of new infections had started declining almost as soon as the measures took effect.
Those couple of weeks, which just started right around yesterday here and around a week earlier in Italy, will look pretty horrifying. The number of cases will skyrocket and temporarily overwhelm hospitals, leading to medical chaos and excess deaths. But, assuming we continue to shut just about everything down, it will stop getting worse before about April 1 at the latest, and deaths will level off by tax time or so (April 15).
Now what I don't know is how long things have to be paralyzed to kill most of it off, how bad the economic decline will be, and to what extent it will just spread again as people go back to work. It is fairly likely to become endemic in the human population and never really go away entirely, unlike SARS, which did disappear entirely by mid-2004 thanks to effective control measures in the affected countries. But hey, I figure we can take any good news we can get right now.