1.新闻网址︰
https://www.redcross.org/about-us/news-and-events/press-release/2020/study
-suggests-possible-new-covid-19-timeline-in-the-us.html
2.新闻来源︰
美国红十字会
3.完整新闻标题
Study Suggests Possible New COVID-19 Timeline in the U.S.
4.完整新闻内容︰
In the U.S., the first COVID-19 infection was reported on January 19, 2020
in a traveler returning from China. These study results show that it’s
possible COVID-19 may have been present in the U.S. in December 2019, earlier
than previously recognized.
The findings of this study indicate that that it is possible the virus that
causes COVID-19 may have been present in California, Oregon, and Washington
as early as Dec. 13-16, 2019, and in Connecticut, Iowa, Massachusetts, Michigan
, Rhode Island, and Wisconsin as early as Dec. 30, 2019 - Jan. 17, 2020.
Although researchers at the CDC found antibodies that reacted to the virus
in blood donations from all nine states that were part of this study, the
percentage of blood samples with these antibodies was very low─indicating
the virus was not widespread. All identifiable donor information was removed
from blood donation samples prior to distribution to the CDC.
It is not possible to determine whether the potential SARS-CoV-2 infections
suggested by this study may have been community- or travel-associated. A
previous survey of blood donors, conducted to help understand travel practices
, determined that less than 3% of respondents reported travel outside of
the U.S. within the 28 days prior to donation, and of those reporting travel
, only 5% traveled to Asia.
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