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Covid-19 toll on US business? An additional 200,000 closures in the first year of the pandemic

J&J privately asked Rival Covid-19 vaccine manufacturers to test for clotting risks

Covid-19 variants float in India, but no one knows how many

Annual Covid-19 vaccine booster shots are likely to be needed, according to Pfizer CEO

U.S. Treasury yields fell sharply

Blood clots are more likely after Covid-19 than after vaccination

Shares rise after strong gains, economic data

Hong Kong police premiere Goose Pass as the city marches in tune with Beijing

Pfizer, Modern vaccines can also cause ultra-rare blood clots, study claims

Bank of America shares fall in surplus gains. What you need to know.