Moderna Stock Soars After First US Bird-Flu Death

Key TakeawaysModerna shares jumped more than 10% to lead S&P 500 gainers Tuesday, a day after the first bird-flu death was reported in the U.S.The biotech company is developing a vaccine for H5N1.Despite Tuesday's gains, Moderna shares are down more than 55% over the past year. Moderna (MRNA) shares jumped more than 10% to lead S&P 500 gainers Tuesday, a day after the first bird-flu death was reported in the U.S. The biotech company is developing a vaccine for H5N1. On Monday, the Centers for Disease Contro ...