As President Biden convenes heads of state for a Covid-19 summit on Wednesday, pressure is growing on American drug companies — particularly Moderna, the upstart biotech firm that developed its coronavirus vaccine with billions of dollars in taxpayer money — to share their formulas with manufacturers in nations that desperately need more shots.
Last year’s successful race to develop vaccines in extraordinarily short order put companies like Moderna and Pfizer in a highly favorable spotlight. But now, with less than 10 percent of those in many poor nations fully vaccinated and a dearth of doses contributing to millions of deaths, health officials in the United States and abroad are pressing the companies to do more to address the global shortage.
