On March 17, 2020, a member of a Skagit County, Washington, choir informed Skagit County Public Health (SCPH) that several members of the 122-member choir had become ill. Three persons, two from Skagit County and one from another area, had test results positive for SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19). Another 25 persons had compatible symptoms. SCPH obtained the c
![High SARS-CoV-2 Attack Rate Following Exposure at a Choir Practice ...](https://cdn-ak-scissors.b.st-hatena.com/image/square/7c51e991a055f625aff7cdf4ba4bf61d0bf7f61b/height=288;version=1;width=512/https%3A%2F%2Fwww.cdc.gov%2Fmmwr%2Fvolumes%2F69%2Fwr%2Fsocial-media%2Fmm6919e6_ChoirPracticeCOVID19_IMAGE_12May20_1200x627.jpg%3F_%3D63960)