Apr.29 -- Johns Hopkins Assistant Professor of Emergency Medicine Lauren Sauer discusses progress made on Covid-19 testing and remaining vigilant amid a slowdown in new cases. She speaks on "Bloomberg Surveillance." The Bloomberg School of Public Health is supported by Michael R. Bloomberg, founder and majority owner of Bloomberg LP, the parent company of Bloomberg News.
![](https://i.ytimg.com/vi/xGOgFpGkbBo/mqdefault.jpg)