Thread by @kerpen

We have the CDC Flu View for MMWR Week 3 ending Jan 22.
cdc.gov/flu/weekly/ind…

Flu testing. Traditionally the clinical lab figures are the surveillance numbers, but a lot of testing has shifted to public health labs.

Comps are this year's week 3 to previous years' week 3 week-of reports, not final, to account for lag.

docs.google.com/spreadsheets/d…

Here's the clinical labs by week. Decline continues for flat after four weeks of decline -- will we get a February rebound?

Flu testing season-to-date, first 16 weeks (MMWR weeks 40 to 3) compared to recent years.

Here's CDC's ILI chart for this week (MMWR week 2). Three weeks of drop from apparent cron peak.

CDC reports a total of 971 flu hospital admissions (-512 from previous week) nationally for the week ending on January 22.

Today's national HHS Protect daily flu hospital census is 1,140. (-260 from last Friday).

Here's where they are by state.

Cron stomp ending?

Biofire shows everything else dropped while the cron took over, now bottoming while cron peaks.

syndromictrends.com

CDC RSV by region through 1/22.

West drop continued, joining the rest of the country.

docs.google.com/spreadsheets/d…

Fifth week of flu decline in Florida, which had been retracing 2018-19 season but broke down sharply when the cron showed up. floridahealth.gov/diseases-and-c…

Sweden. Flu A returned big time after ~2 years at zero -- vanished just as fast when cron hit.

karolinska.se/globalassets/g…

Why does seasonal flu vanish during pandemics? We don't really understand the mechanism, but it's not mitigation.

https://twitter.com/kerpen/status/1451549004068700170

And it's not masks. We have tons of studies showing masks don't stop flu, and the patterns are the same in places that don't use masks.

apps.who.int/iris/bitstream…

Here's WHO's global flu chart, five year and one year views. Is the global mini return past peak for the year?

This link will let you compare any country or region in the world:
app.powerbi.com/view?r=eyJrIjo…

And that concludes this week's Friday ILI Day thread!