May 12, 2021 https://www.politico.com/newsletters/future-pulse/2021/05/12/covid-tracing-apps… Politico As cases drop, pings should too, said Joanna Masel, who helped pilot the Covid app Arizona uses. It’s “good to live in a world,” she said, with fewer notifications -- and fewer cases. Related Improving Health Related Researchers Joanna Masel