I'd be concerned. After a period of improvement, Houston is seeing increasing new daily cases about 10 days (and beyond) after phase 1 reopening which would reflect increased transmission in the city population. It's hard to tell without the trailing 5 day growth rate plotted which way the trend is really going, and the final two days plotted which look good fell on the holiday weekend (all weekends generally show decreased cases), so you aren't going to know if the trailing growth rate is rising or falling yet and whether you are going to see entry into an exponential growth rate related to relaxation of restrictions. These graphs are pretty but they would be far more informative if the trailing growth rates were plotted against the bars and the y axis could be viewed as a logarithmic plot. Good luck, stay safe.
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As it turns out, I am actually performing statistical analysis of the data from several counties as part of a task force trying to make recommendations for returning to Sanctuary services at our church. In doing so, I have learned a number of things about these dashboards and charts - among them
1. There is no consistency from county to county in the way data is presented in these dashboards
2. There is especially no consistency in how "probable" cases get updated to "confirmed" cases from one county to another
3. You have to be very careful to be sure that the data in a chart is what you really think it is
I haven't had a chance to analyze the data in that "greater Houston area chart", but from what I've seen from the most populous counties in that area, I have my doubts about its validity.
I updated my analysis of the combined Houston/Harris County data as of today. The photo below shows a statistical regression of the daily new confirmed cases in Harris County & Houston. It clearly shows an overall declining trend.
If you simply read reports about Houston/Harris, you may see claims that 400-600 new cases were reported this weekend. Technically that's true, but what is overlooked is that most of those "new" cases are reclassification of cases that were previously reported as probable.
Harris County does a good job of going back to the date an individual's case was opened and updating the confirmed cases for that day accordingly. So the total cases added to the end of the chart for the last 4 days is only 168.
This approach keeps the overall trend fairly accurate and properly accounts for newly confirmed, but already existing cases. As a result, the total confirmed cases for Houston/Harris jumped by 785 since last Friday, but there have only been 168 newly reported cases.
Most counties aren't this meticulous. Some count probables separately, but when they become confirmed later, they simply count that the same as a new confirmed case. As a result, it distorts the current day's data if you are trying to look at the charts as a measure of new infections.