Does Contact Tracing Work? Quasi-Experimental Evidence from an Excel Error in England
Does Contact Tracing Work? Quasi-Experimental Evidence from an Excel Error in England
Contact tracing has been a central pillar of the public health response to the COVID-19 pandemic. Yet, contact tracing measures face substantive challenges in practice and well-identified evidence about their effectiveness remains scarce. This paper exploits quasi-random variation in COVID-19 contact tracing. Between September 25 and October 2, 2020, a …