Post #1011: No change in trend

What appears to be a slight steepening of the curve today is probably due to the handful of states whose offices closed for Presidents’ Day.

Otherwise, if we’re reaching the end of the U.S. pandemic via herd immunity, it must be too soon to tell.  On the other hand, if we’re reaching the fourth wave of the U.S. pandemic via the U.K. variant, it must be too soon to tell.

Because, the fact is, cases continue to decline in a more-or-less straight-line fashion, 20-ish percent per week.

Still looking forward to that explosion of cases from Super Bowl parties.  We know that has to happen because experts warned us about it.  That ought to start showing up around Friday or so.  Or not.

 

Post #1010: William and Mary and the power of big round numbers.

Source:  William and Mary COVID-19 dashboard, updated to COB 2/15/2021.

I pulled up the William and Mary COVID-19 dashboard this afternoon and my heart skipped a beat.  I immediately read this as saying that THEY’VE HAD A HUNDRED CASES OF COVID-19 ON CAMPUS!  It took me a minute to realize that what it actually says is that they’ve had a hundred cases of COVID-19 on campus. Continue reading Post #1010: William and Mary and the power of big round numbers.

Post #1006: Down 61% from the peak. But so is everybody else.

New US covid cases have fallen 61% from the early January peak.  Cases continue to fall across all regions and states.

 

 

 

 

What had appeared to be a breakout by North Dakota was probably just some sort of data reporting issue.  North Dakota shows every sign of rejoining the slow downward progress of the rest of the Midwest states.

 

 

 

There’s no evidence yet that herd immunity is playing a role in the rate of decrease across states.

 

 

 

 

Right now, the best explanation for the decline in U.S. cases is “seasonality”.  Coronavirus cases rose for no particular reason, and now they are falling for no particular reason.  It was just the coronavirus season.  And now it’s the end of coronavirus season.  Just like flu season every year.  And that’s why it’s affecting all the states, more-or-less all the same, more-or-less at the same time. Continue reading Post #1006: Down 61% from the peak. But so is everybody else.

Post #1004: On N95 masks and razor blades

Masks for sale to the public, 2/11/2021 NY Times Article

Today’s NY Times has an article on small U.S. N95 mask manufacturing startups that are now failing.  The reporting is muddled, at best.  The good part is that they list several small U.S. manufacturers, many of which appear ready and able to sell NIOSH-certified N95s directly to consumers. Continue reading Post #1004: On N95 masks and razor blades

Post #1003: North Dakota, is this an outbreak threshold effect?

Source for all graphs:  Calculated from NY Times Github COVID data repository, data through 2/10/2021.

U.S. new cases continue to decline. We’re now 58% down from the peak.  But the rate of decline isn’t speeding up.  It’s still averaging just above 20% per week.

 

 

North Dakota continues to be an outlier.  New cases continue to fall, and as of 2/10/2021 the new-case rate in ND just slightly higher than in Hawaii.  This graph shows the states, since 1/1/2021, in logs (so that constant growth rate graphs as a straight line).

I really can’t say why North Dakota is doing so well.  I’d like to say that this is the end-game on herd immunity, but the data just don’t support that.  If that were the main driver of ND, then we’d be seeing some sort of changes in all the states with (estimated) population COVID-19 immunity levels near that of ND. Continue reading Post #1003: North Dakota, is this an outbreak threshold effect?

Post #1002: North Dakota new COVID cases decline rapidly.

Source: Calculated from NY Times Github COVID data repository, data through 2/9/2021.

 

 

 

 

Just a quick recap of what I’m waiting to see in the data, and why.  And why the recent sharp decline in new case growth in North Dakota might or might not be it. Continue reading Post #1002: North Dakota new COVID cases decline rapidly.