Also Read | How India has become an unequal republicPresident Joe Biden has said the goal of his administration is to vaccinate 100 million Americans in the first 100 days of his presidency.Meanwhile, the White House today said in a press release that the Biden administration is working to purchase additional 200 million more doses of COVID-19 vaccines to reach 600 million doses this summer and vaccinate 300 million people."The Biden-Harris administration is working to purchase an additional 100 million doses of each of the two Food and Drug Administration-authorized vaccines - Pfizer and Moderna," the release said on Tuesday. "This increases the total vaccine order for the US by 50 per cent, from 400 million to 600 million with these.