@TechReport{iza:izadps:dp14202, author={Bar-On, Yinon and Baron, Tatiana and Cornfeld, Ofer and Milo, Ron and Yashiv, Eran}, title={COVID-19: Erroneous Modelling and Its Policy Implications}, year={2021}, month={Mar}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={14202}, url={https://www.iza.org/publications/dp14202}, abstract={Research in Economics on COVID-19 posits an economy subject to disease dynamics, which are often seriously misspecified in terms of speed and scale. Using a social planner problem, we show that such misspecifications lead to misguided policy. Erroneously characterizing a relatively slow-moving disease engenders dramatically higher death tolls and excessive output loss relative to the correct benchmark. We delineate the latter, employing epidemiological evidence on the timescales of COVID-19 transmission and clinical progression. The resulting sound model is simple, transparent, and novel in Economics.}, keywords={optimal policy;public health;GDP loss;COVID-19;disease dynamics and scale;misspecification}, }