U.S. pharmaceutical giant Pfizer Inc. said Monday that its experimental vaccine was more than 90 percent effective in preventing COVID-19 during a late-stage clinical study, raising expectations of a breakthrough in the global fight against the coronavirus pandemic.Pfizer is expected to apply for emergency use authorization in the United States for the potential vaccine as early as this month, after collecting further safety data. The company has an agreement with the Japanese government to supply the Asian country with 120 million vaccine doses, enough for 60 million people or roughly half…READ FULL ARTICLE