How To Make Sense of All The COVID-19 Projections? A New Model Combines Them

The team unveiled the first version four weeks ago and ever since has been adding in more forecasts and updating the projections weekly. The latest update — released Tuesday — incorporates eight models, including some oft-cited ones, such as those built by the Imperial College London, the University of Washington Institute for Health Metrics and Evaluation, Columbia University and Northeastern University. (The team also sends each week’s release to the CDC, which publishes a version with a slight time lag.)

The projections vary substantially — with the most pessimistic forecasting a total death toll of 120,000 by June 6 and the most optimistic forecasting 103,000 deaths by that date. But the models have been inching closer to each other. Over the past several weeks, the distance between the highest and lowest estimates has halved from a gap of 36,000 deaths two weeks ago to a gap of 17,000 deaths in the most recent update released Tuesday.

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