Category Archives: Web Article Review

more coronavirus tracking

This massive data analysis entry from Our World in Data is a pretty good example of how to take a data set and beat the crap out of it from every angle.

I like what they did. Since it’s by country, it allows interesting comparisons across countries but is not meant to provide local or regional-specific information. Countries are pretty big. My favorite trackers that are most relevant to my situation are still the City Observatory analyses of U.S. metro areas and the University of Washington simulations of available hospital capacity. The latter are by state.

could coronavirus lead to food shortages?

The coronavirus is a worldwide tragedy, but for the moment at least, most of us seem to have a reliable supply of water, energy, and food (at least, those of us who normally have these things – some people in the world clearly do not and that is not equitable or fair in the best of times).

But could the coronavirus situation somehow lead to food shortages? Well, there are a few ways. One is if countries that normally export food decide to stop doing so, at least temporarily. This would hurt countries that import a significant amount of food – small, densely populated nations come to mind, as do populous nations in inhospitable environments like deserts. Bloomberg says there are some indications this process has started, but only on a small scale so far.

Kazakhstan, one of the world’s biggest shippers of wheat flour, banned exports of that product along with others, including carrots, sugar and potatoes. Vietnam temporarily suspended new rice export contracts. Serbia has stopped the flow of its sunflower oil and other goods, while Russia is leaving the door open to shipment bans and said it’s assessing the situation weekly.

Bloomberg

The problem would not be an absolute lack of food, but a possible lack of workers to pick specific crops at specific times. Then there could be supply chain problems as the crisis impacts truck drivers, warehouse workers, grocery store workers, etc.

The UN Food and Agriculture Organization maintains a food price index, updated monthly. At the end of February, the index was a relative low indicating ample supply and smoothly functioning trade and supply chains.

So it sounds to me like the food supply may weather this particular storm unless we are unlucky enough to have major droughts, storms, floods, heat waves, etc. in key food growing regions at the same time.

When it comes to electricity, Wired says the U.S. supply is safe for the time being. One concern there is that mostly automated power plants are run by a relatively small number of highly skilled people, and if significant numbers of them were to get sick at the same time it would cause problems. Add to this the possibility of severe weather putting further strain on the system, and again we need a certain amount of luck to get through this.

Relying on luck is not the hallmark of robust, resilient, long-lasting systems.

The Dow Jones Industrial Average of End Times Activity

On this Easter morning, you can check the Rapture Index here.

The Rapture Index has two functions: one is to factor together a number of related end time components into a cohesive indicator, and the other is to standardize those components to eliminate the wide variance that currently exists with prophecy reporting.

https://www.raptureready.com/rapture-ready-index/

The Rapture Index stands at 186, “Fasten your seat belts”.

an immunity test for Covid?

This article raises the possibility that maybe an immunity test for Covid-2 could be rolled out faster than a vaccine. The concept is that people who have had the disease and recovered, thereby developing some immunity (which is still being studied and not 100% confirmed that it is long-lasting), could be identified and allowed to resume their normal routines before people who have not been exposed and/or are at high risk.

Bill Gates warning of pandemic risk in 2015

In 2015, Bill Gates put the risk of a global pandemic “worse than Ebola” at 50% within his lifetime. Bill Gates is 64. Should we listen to Bill Gates because he is rich? Of course not. But we should listen to him because his foundation is focused on public health, preventing and preparing for the sort of thing that is unfolding right now.

coronavirus stats by metro area and normalized for population

I like this City Observatory approach to coronavirus stats. They are reporting numbers by metropolitan statistical area and normalizing them per 100,000 population. They are also reporting the rate at which cases are growing in each metropolitan area. They are using static tables and graphs but I think these provide much better information than the fancy maps and dashboards I have seen. The fancy maps and dashboards are updated more often – the ideal approach would blend all this together. As long as I am making a wish list, it would be nice to see the number of people hospitalized in each metro over time. That is the number we are looking for – the stock of available beds to first reappear as a positive number, then start to grow. When that happens I think we will start to see more public and political pressure to get people back to work. I expect high risk people to have to hide in their homes for quite some time after that, which is sad but I think that is the balance our society is likely to strike. If there comes a point later in the year where that stock of available hospital capacity starts to shrink or disappear in a given metro, that is when we might see shorter, more geographically targeted social distancing orders come and go.

Google’s pedestrian foot traffic data

The Philadelphia Inquirer has an article showing foot traffic at various locations around the city during the coronavirus shut down compared to average. As might be expected, foot traffic is down pretty much everywhere except grocery stores, where it is up slightly. This matches my personal observations. It doesn’t match the media accounts of crazy lines at grocery stores and big box stores in the suburbs. Maybe this is because in a dense walkable city, we have many small stores instead of a few large stores, and people tend to spread out their shopping over the entire day and week and to buy just a bag or two at a time that they can carry home. There are odd, sporadic shortages, but I have not observed any extreme shortages of basic goods.

The data supposedly come from Google. I tried to find out more about how, where and when Google is collecting this data, and came up short after 15 minutes or so of looking.

Now, I admit that clearly dense cities with a lot of social interaction have their down side right now. The big dense cities are also where the most international arrivals happen, and this factor along with density might be why they are the worst places to be right now. Hopefully they also have the largest medical facilities with the most experienced medical staff, but whatever we have is clearly not going to be enough to help everyone who needs help in the next month or so.

more epidemic simulations

Okay, the current pandemic is not a game and not fun, people are suffering and I certainly don’t want to make light of it. But maybe we can at least learn something about systems, such as positive and negative feedback loops, S-shaped curves, and time delays. Netlogo has a few agent-based virus simulations to play with. The MIT system dynamics people put together a whole lesson on simulation of an epidemic as a teaching tool. (This is part of their “road maps” series, which you can find here. Just be warned that many of the hyperlinks don’t work, but if you cut and paste the names of the documents into a search engine, you can usually find them.)

And of course, there is the old flash game Pandemic 2, which is kind of fun in ordinary times but seems a little crass to play now, or at least to admit that you’re playing it. (Your goal is to kill everybody in the world, for example by making them vomit blood from their eyes…) On the other hand, Flash seems like it is on the way out so if you want to try this game it may be best to try it soon. And those of you stuck at home without multiple small children to entertain (not a category that includes me!) might have the time right now.

coronavirus simulations

The Washington Post has some interesting simulations that explain why quarantine is not all that effective a strategy, and why aggressive social distancing can be so effective. Basically, by isolating healthy people from each other you can drastically slow down the rate of spread and reduce the number of cases hitting the health care system at any one time to something manageable. These are agent-based simulations with accompanying time series graphs, and I find them pretty intuitive and informative.