Johns Hopkins trains 22,000 contact tracers on Coursera in the first week — from blog.coursera.org by Jeff Maggioncalda

Excerpt:

We are highly encouraged by the initial response — in just one week, more than 150,000 learners have enrolled in the course. More than 22,000 learners have already completed it, including over 2,500 prospective contact tracers who could be employed by the state of New York. Contact tracing will offer meaningful employment to those impacted by the economic downturn while fulfilling an urgent public health need.