Covid-19 vaccines appeared to be less effective against the delta variant among people in a Colorado county hit early by the more infectious strain, according to a CDC study released Friday.
“TOPLINE The U.S. Senate on Monday unanimously approved a bill to require the federal government to declassify information about any links between China’s Wuhan Institute of Virology and Covid-19 following reporting by the Wall Street Journal that three researchers at the lab were hospitalized with Covid-like symptoms in November 2019.
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