Nearly a month before community spread was first detected, "sustained, community transmission" of the coronavirus in the United States began in late January or early February, a report from the CDC says.
"As America begins to reopen, looking back at how COVID-19 made its way to the United States will contribute to a better understanding to prepare for the future," said CDC Director Robert Redfield.
เราได้สรุปข่าวนี้มาให้อ่านอย่างรวดเร็ว หากสนใจข่าว สามารถอ่านฉบับเต็มได้ที่นี่ อ่านเพิ่มเติม: