Serosurvey leaderboard, May 31, 2020

With so many now, I pick and choose some favorites.

This is golf, if you haven’t guessed.

One year on [edit].

I first started tracking Covid antibody levels exact a year ago. It seems fitting to update this page with a link to an article in The Guardian:

About half of people in UK now have antibodies against coronavirus (here)

Dr. Henrik Jarlov is the keeper of the Google Sheet. A link to it is here. This is the best one-stop list of serosurveys to date. As of this morning (5/31), it had 105 entries.

I keep a private leaderboard of results that interest me for one reason or another. Many of these I’ve written about in this blog.

The leaderboard I keep around for reference:

Let me repeat a few things I’ve said before.

● The big news in blood antibody testing in the United States is the involvement of the large private laboratories, notably Quest Diagnostics. On 26 May, Quest reported that it has performed 1.25 million antibody tests:

This data is going to state public health departments and can be seen, for example, in large numbers for Georgia and Virginia. It is also going to the CDC, but what happens to it there is anyone’s guess.

Serosurveys are snapshots in time. One has to assume that SARS-CoV-2 antibody seroprevalence is on a long-term upward trend.

It’s very easy to see what you want to see in data, but I believe you can just perceive an upward slope in the U.S. numbers by state. After more weeks become available, this will deserve some careful analysis.

The most dramatic instance of seroprevalence rising comes, albeit with an explanation, from the Geneva University Hospital (HUG) and the University of Geneva:

  • 1st week 3.1% — April 6
  • 2nd week 6.1% — April 13
  • 3rd week 9.7% — April 20

(See my post here.)

You can follow the COVID aB Tracking blog on Twitter @Will_Bates_sci

Will Bates writes about science, technology, and business. His journalism has appeared in the New York Times, the Wall Street Journal, and numerous magazines.