David A. Raitzer is an Economist in the Economic Research and Regional Cooperation Department of ADB, where he normally focusses on impact evaluation of development interventions and research on environmental policy challenges and agricultural development constraints. In the COVID-19 era, he has also become involved in epidemiological modeling and use of cost benefit analysis on measures to control the pandemic.  His over 16 years of research experience at a range of international organizations have focused on evaluating the effects and benefits of policies and interventions, using a range of methods from randomized experiments, to quasi-experimental approaches, bio-economic modeling, and economy-wide modeling.