The 200 million doses just purchased will be available by May, rather than June as originally predicted.The Biden administration has finalized deals for an additional 200 million doses of Covid-19 vaccines, fulfilling , President Joe Biden said Thursday afternoon.The deals for 100 million additional doses each from vaccine makers Moderna and Pfizer will boost the country’s supply to 600 million doses — enough to inoculate 300 million people.The 200 million doses just purchased will be available by May, rather than June as originally predicted. That puts the country on track to vaccinate 300...…The 200 million doses just purchased will be available by May, rather than June as originally predicted.The Biden administration has finalized deals for an additional 200 million doses of Covid-19 vaccines, fulfilling , President Joe Biden said Thursday afternoon.The deals for 100 million additional doses each from vaccine makers Moderna and Pfizer will boost the country’s supply to 600 million doses — enough to inoculate 300 million people.The 200 million doses just purchased will be available by May, rather than June as originally predicted. That puts the country on track to vaccinate 300...WW…