U.S. buys 200 mln more Moderna COVID-19 vaccine doses

The U.S. government has bought another 200 million doses of Moderna’s (MRNA.O) COVID-19 vaccine, the drugmaker said on Wednesday, including an option to buy experimental shots that may be in development. The additional Moderna doses, which brings total U.S. orders to 500 million, could be used for primary inoculation, including of children, or as a possible booster shot, the company said. Moderna is currently conducting clinical trials testing a third booster shot of its authorized vaccine as well as an experimental one to protect against coronavirus variants.