COVID-19: Economist helps build `contact tracing` app for Peru
(WorldNews Politics)

Kristian López Vargas couldn`t stand by as the coronavirus threatened his home country of Peru. Instead, he approached the Peruvian government about developing an app to improve `contact tracing` to protect people from COVID-19. Then he helped lead the effort that culminated with the app`s release just three weeks later. López Vargas worked around the clock with academics, the government, and technology companies to develop the phone-based app and accompanying probability models. With the endorsement of the government, the app PeruEnTusManos was launched April 3 and already has one million users. `The public has welcomed this tool and appreciates that the government took decisive action to...