In the weeks before China reported its first case in 2019, COVID was discovered in the United States. The study may spark debate about the origin of the pandemic. About a year after the coronavirus changed the concept of normal phenomena known to humans so far, recently A study by has now found that Covid-19 infection occurred in the United States dating back to December 2019. The study provides further evidence that the first case of the coronavirus has spread globally a few weeks ago in China. The coronavirus spread silently around the world earlier than the known time.
https://www.theweek.in/news/health/2020/12/01/covid-found-in-us-weeks-before-china-reported-first-case-in-2019-study.html
研究表明,Covid-19在美國的存在要早於最初的設想
洛杉磯-儘管直到1月份才在美國發現了首例冠狀病毒,但一項新研究表明,這種新疾病在美國的出現時間早於最初的設想。
由美國疾病控制與預防中心的研究人員周一在《臨床傳染病》雜誌上發表的一項研究表明,這種新型病毒最早於2019年12月中旬出現在美國。
該結論基於來自華盛頓,俄勒岡,加利福尼亞,康涅狄格州,愛荷華州,馬薩諸塞州,密歇根州,羅德島州和威斯康星州等9個州的紅十字會的獻血。
根據這項研究,在7,389次獻血中,有106次存在SARS-CoV-2(新病毒的科學名稱)的證據,這些獻血是在2019年12月13日至2020年1月17日之間收集的。