Moderna stock jumped early Tuesday after the first bird-flu death was reported in the U.S.Shares were up 3.3% to $43.98 in premarket trading, after initially rising as much as 6%. Futures tracking the benchmark S&P 500 index traded largely flat.

A person in Louisiana who became severely ill with a bird flu virus known as H5N1 in December has passed away from the infection, marking the first known bird flu death in the US

The first person to have a severe case of H5N1 bird flu in the United States has died, according to the Louisiana Department of Health.