UUorld

For images and videos covering the number of reported cases since 4/22/09, please see the previous post.

Of the 123 new cases, 74 are in Illinois, which is the largest single day increase for any state.

Note: Colors are by logarithmic scale. See further explaination and comparisons below.

Over the weekend 119 new cases of Swine Flu were reported in the US by the CDC, bringing the count from 160 on Friday to 279 on Monday morning. Note: scroll down for videos of the whole trend, from the first reported cases onward, or search “UUorld” on Vimeo.

To start with, here is an image showing the most recent distribution of cases by state:

Next is the same data, with colors assigned by a logarithmic scale, so that the breadth of states reporting any cases is emphasized. This scaling may be appropriate if we are concerned to take special note of where the Flu is just beginning to appear. Notice the difference in the color legend. We have this version of the map in both a 3D version and in a flat, colors-only version…

Here is a video showing the rise of reported cases from 4/22/09 when no cases had been reported in the US, through 11:00am on 5/4/09…

And a video that shows the same data, with colors by logarithmic scale…

Last, at bottom is a video where colors are by rate of change, such that states with the greatest increase in reported cases appear in dark red and those states with no increase appear in pale yellow. States in blue occur when the number of reported cases decreases, which may happen if an initially reported case cannot be confirmed.

Notice the alternation of high growth in the leading states (CA, TX, NY) with higher rates of increase in a broader group of states (IN, DE, MD, SC, LA, OK, CO). The first cases are reported and growth happens in the leading states, then on 4/30, many other states report increasing numbers, then the leading states are growing fastest again, and last we see a wave of increases coming again from a broader range of states, notably including many new cases in Louisiana and Delaware.

Hi.  We’ll update this post as new numbers become available — this is the second post.

Our data is from the CDC : http://www.cdc.gov/swineflu/

Please let us know if you see new numbers before we do.  Thanks!

Note: Colors by log scale.

And, here is a video, showing the change in reported cases from 4/30….

And below we can take a look at rates of change by color, with Red as highest growth rate, and Blue as the lowest. In many cases, the number of cases is very small, and since this number is used as the denominator in calculating rate of change, some states with relatively high rates of change have very few actual cases. It may be useful to compare the map below to the top map to assess which states have relatively high numbers of cases and relatively high growth rates. Also worth noting is that none of these numbers have been placed in the context of other public health numbers. For example, if these maps were scaled relative to regular flu cases, it would be very difficult to see any swine flu cases or rates of growth. Nonetheless, if the CDC regards these Swine Flu cases as an important trend to watch, maybe these maps are useful without needing broader context. Comments?

Colors above show rate of change from 4/30, with dark red indicating a growth rate of greater than .1 and pale yellow showing no growth.