The US Centers for Disease Control and Prevention (CDC) has asked state public health officials to prepare to distribute a potential coronavirus vaccine to high-risk groups by November 1, documents published by the agency showed on Wednesday.
The timing of a vaccine has taken on political importance as US President Donald Trump seeks re-election in November, after committing billions of federal dollars to develop a vaccine to prevent Covid-19, which has killed more than 180,000 Americans. In a letter to governors dated August 27, Robert Redfield, director of the US Centers for Disease Control and Prevention, said states “in the

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