(1/4) The demographic shift in #COVID19 in two graphs.

Our team @HarvardGH pulled together age-specific testing data (combined commercial and public health labs) from @CDCgov

1) The proportion of positive COVID tests <65 increased from 63% to 82% from March 1-May 31.

THREAD Image
(2/4) On March 1, <65 test positive rate was roughly 40% LOWER than >65. On June 7, <65 test positive rate was roughly 75% HIGHER than >65. Note inflection point week of Apr 19 when test positive rate for <65 became higher than >65

2/4 Image
(3/4) Many including @trvrb @nataliexdean have commented on this, but conversation with @nytimes @juliebosman prompted our team to dive into the CDC data.

What does this mean?

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More from @Thomasctsai

Aug 16, 2020
There's a lot of discussion on why testing has gone down the last week (see chart below from @COVID19Tracking)

Some have suggested data issues at the county and state levels. True but not whole story.

Some have suggested demand is decreasing..

THREAD

1/10
So I took a look at Google Trends.

A simple search of "covid testing near me" at the national level is revealing.

Interest decreased dramatically week of 7/5, plateaued x 3 weeks and decreasing again

2/10
What about Texas where COVID tests had dropped dramatically?

Decreasing searching for covid tests over last few weeks.

3/10
Read 10 tweets

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