page = covid-19 : npr
url = https://www.npr.org/tags/804916759/covid-19
A person holds a mask while walking outside in Philadelphia on Friday. New coronavirus cases have dropped, but health experts caution that not enough Americans have been vaccinated to completely extinguish the virus. Matt Rourke/AP hide caption
Matt Rourke/AP
New COVID-19 Cases Haven't Been This Low In The U.S. Since Last June
May 23, 2021 • New cases have tumbled, sparking optimism that vaccination campaigns are stemming severe cases and the virus' spread. And, over the last seven days, average deaths fell to the lowest rate since July.