A health ministry panel may decide as early as May 20 whether to approve Moderna Inc.'s COVID-19 vaccine for use in Japan, government sources said Tuesday, possibly paving the way for a second type of shot to be available in the country after the one developed by Pfizer Inc.Japan has a supply agreement with Moderna for 50 million doses of the vaccine, enough for 25 million people or about one-fifth of the entire population. Their delivery would help speed up the country's rollout ahead of this summer's Tokyo Olympics.The U.S. biotechnology firm's Japanese partner Takeda Pharmaceutical Co. s…READ FULL ARTICLE