Share this page!

Enter URL or ID to Unroll

You can paste full URL like: https://x.com/threadreaderapp/status/1644127596119195649
or just the ID like: 1644127596119195649

How to get URL link on X (Twitter) App

  1. On the Twitter thread, click on or icon on the bottom
  2. Click again on or Share Via icon
  3. Click on Copy Link to Tweet
  4. Paste it above and click "Unroll Thread"!
  5. More info at Twitter Help
David Pritchard Profile picture
David Pritchard
@drpritch2
mobile dev : graphics : transport modelling : c++ @Mental_Canvas
Apr 4, 2021 • 9 tweets • 6 min read
1/ Looking at cross-border #Covid19 data, to shine some light in our data blind spots.

Greater Toronto is back near its January peak. Like then, there are two peak points: Buffalo and Peel. 🇺🇸Niagara County and 🇨🇦London are up more than 2x over 2 weeks.

davidpritchard.org/covid/covidUsa… 2/ 🇨🇦Sarnia and Windsor are next to a more dire situation, with case rates 6-8x across the 🇺🇸border.

Lake Huron 🇺🇸 counties and metro Detroit are soaring in B117 cases and doubling every 12 days.

The Michigan-Ohio border is striking too; makes this feel driven by MI's policies.
Dec 1, 2020 • 6 tweets • 2 min read
1/ Another look at the #Covid19Canada border, with animations.

The prairies: we can see a big buildup in COVID in the US border states (Dakotas, Montana, Minnesota) by early October. Then in early November it snowballs first in Manitoba next to the border. 2/ The current map of the prairie provinces' border. Image
Nov 26, 2020 • 11 tweets • 5 min read
1/ Let's talk about the border, #COVID19canada and #COVID19Ontario.

So many maps stop at the border. And the Canadian metrics (weekly cases/100k, @imgrund) don't align with the US metrics (daily cases/100k). I think we have trouble understanding just how dire the border is. Image 2/ This is what we think about in Ontario right now. Peel: nearly 200 weekly cases/100k population. Toronto: also in lockdown. The rest of the Greater Toronto Hamilton Area, in the 50-110 bracket, above the red "Control" threshold of 40. Image
Jul 30, 2020 • 7 tweets • 4 min read
#COVID19 in #Ottawa this week: the case spike that started two weeks ago has levelled off, at a new higher plateau. Rt is dropping towards 1.0.

But we have three childcare outbreaks and children/teenagers are ~40% of the week's cases. 1/ First, the latest COVID19 Rt (reproduction rate) and case graph. 2/
Jul 22, 2020 • 5 tweets • 2 min read
1/ What does the data show about the recent #Ottawa #COVID19 surge?

Geography: while Alta Vista has the highest case rate over the entire epidemic, Ward 10 Gloucester-Southgate appears to be driving the last two weeks of growth. 2/ Demographics: @ottawapublichealth hasn't pointed the finger at any single group, just parties and "indoor private gatherings" in general.

The data agrees - apart from a spike in teenage activity at end of June / Canada Day weekend, and a 20s spike in the last week.