Read on Twitter
Will post a collection of age bracket prevalence/positivity heat maps here as I come across them. Most demonstrate the repeated pattern of the 20-30 yr olds driving community transmission, eventually spreading to older and sometimes younger age groups.
Will start off in France. https://twitter.com/vincentglad/status/1303243869933404161
Will start off in France. https://twitter.com/vincentglad/status/1303243869933404161
UK
Several French regions https://twitter.com/gforestier/status/1301599812610129920
Another with more recent data from the UK showing prevalence centering now around highschool age students. https://twitter.com/Dr_D_Robertson/status/1314544108547997703
Edmonton, Alberta. Canada https://twitter.com/LeylaDAsadi/status/1316611076109156352
Updated UK heatmap a fortnight later showing continued spread into older age brackets. https://twitter.com/Dr_D_Robertson/status/1319292649698807813
Here is the latest from Sweden moving into their current phase where they are seeing an increase in prevalence. Axis is switched, but the same pattern persists. Note that Sweden has tended to deprioritise testing so numbers are likely conservative. https://twitter.com/CovidXIX/status/1321130544843968512
Latest from Ontario. Same repeating pattern. https://twitter.com/Billius27/status/1325659519637200897
This one from RKI in Germany with a suggestion from Christian Drosten that they need to compensate for an under testing of children. https://twitter.com/c_drosten/status/1328992956582420480
An updated age positivity heatmap for France showing a resurgence in positivity that appears to be starting out in children this time, rather than 20-30yr olds. https://twitter.com/guillaumerozier/status/1348351378494787589
Here is another visualisation of France’s positivity data. It also shows how much more rapidly transmission has spread across age brackets. I’m not sure how this may relate to testing strategies this time around. https://germain-forestier.info/covid/index.html#menu
