People without symptoms spread virus in more than half of cases, CDC model finds  The Washington Post

source https://news.google.com/__i/rss/rd/articles/CBMiTGh0dHBzOi8vd3d3Lndhc2hpbmd0b25wb3N0LmNvbS9zY2llbmNlLzIwMjEvMDEvMDcvY292aWQtYXN5bXB0b21hdGljLXNwcmVhZC_SAVtodHRwczovL3d3dy53YXNoaW5ndG9ucG9zdC5jb20vc2NpZW5jZS8yMDIxLzAxLzA3L2NvdmlkLWFzeW1wdG9tYXRpYy1zcHJlYWQvP291dHB1dFR5cGU9YW1w?oc=5