1/ Prior to this weekend we had great news on 2 of 3 impt questions on kids:

Less likely to get it
Less likely to die if they got it
Less likely to transmit

On #3: a new study found that kids 0-9 yrs old were 2-3x less likely to transmit as adults.

2/ There's more good news. Headlines from the weekend claimed the study showed that "older kids transmit just as much as adults", but that is being called into question... https://twitter.com/apsmunro/status/1284794506265722881

3/ When you look at the *full* dataset, you see that the '18%' that was driving headlines is totally incongruent with the rest of the data. Should have been a giant yellow caution flag. It was for me https://twitter.com/j_g_allen/status/1284786290752475141

4/ There's more. When you look at the methodology closely, as @apsmunro did in this thread, you see that the conclusion that older kids transmit the same as adults is problematic. https://twitter.com/apsmunro/status/1284794524544446466

5/ If you look at the full data set, including the right hand side of the table, which wasn't covered, it shows that 10-19 year olds are very similar to 0-9 year olds.

6/ As happens, the first, but erroneous, headlines, got millions of impressions, grounding the public's perception.

These nuanced follow-ons? Maybe a few dozen 'likes'

7/ There was a great quote in an article on this over the weekend by Jeffery Shaman: “People, depending on their ideology on school opening, are choosing which evidence to present — and that needs to be avoided,”

It's no wonder so many latched on to that 18% number.

8/ Imagine a headline from this weekend that said:

"New study suggests kids 0-9 are 2-3x less likely to transmit than adults; data for older kids inconclusive at this time"

We have a massive responsibility in communicating science cleanly.

9/ This study needs to be evaluated in the larger context of data about kids (and adults), when it's entered into the schools conversation.

--> kids less likely to get it
--> kids less likely to die from it
--> looks like they are less likely to transmit, but still open

10/ School closures come with devastating costs. Re-opening is an urgent national priority.

Want to reopen?

--> control community spread
--> apply strict risk reduction measures https://schools.forhealth.org/risk-reduction-strategies-for-reopening-schools/