page = covid-19 : npr
url = https://www.npr.org/tags/804916759/covid-19
The numerals in this illustration show the main mutation sites of the delta variant of the coronavirus, which is likely the most contagious version. Here, the virus's spike protein (red) binds to a receptor on a human cell (blue). New research sheds light on what makes this variant so transmissible. Juan Gaertner/Science Source hide caption
Juan Gaertner/Science Source
The Delta Variant Isn't Just Hyper-Contagious. It Also Grows More Rapidly Inside You
July 8, 2021 • New research from China suggests people infected with the delta variant have, on average, about 1,000 times more virus in their respiratory tracts than people infected with the original strain.
Los Angeles County Public Health Director Barbara Ferrer, left, takes questions at a news conference on March 12, 2020. Damian Dovarganes/AP hide caption
Damian Dovarganes/AP
LA County Public Health Director Reports A Rise In Cases Among Black Residents
July 8, 2021 • Dr. Barbara Ferrer, LA County's public health director, describes a recent spike in COVID-19 cases and hospitalizations among Black residents and also county efforts to improve vaccination rates.
LA County Public Health Director Reports A Rise In Cases Among Black Residents