President Joe Biden has said that he believes the US will be approaching normalcy by the end of this year as the country races to deliver coronavirus vaccines to millions of Americans. Biden on Friday toured a manufacturing facility of Pfizer in Kalamazoo, Michigan, seeking to highlight efforts to mass produce a coronavirus vaccine as his administration looks for ways to increase supply and streamline distribution.Biden said that getting the vaccine and having it available is not the same as putting it in someone's arms. This is going to be a continuous rolling effort.“We will have ordered, much of which will have been distributed, over 600 million doses by the end of July. July 29th is the expected date. That could change. Look at what's happening with the weather now, for example: It's slowing up the distribution right now,” he said.Severe winter weather has gripped much of the US this week and delayed the distribution of 6 million vaccine doses, the White House said on Friday.Biden said parenthetically it's not enough that we find cures for Americans. There needs to be a cure that the world is able to take part of, because you can't build a wall or a fence high enough to keep a pandemic out.Biden touted that the country's vaccination rate has increased to about 1.7 million shots a day, well above the pace for the president's goal of 100 million shots in 100 days. Biden had said that in "the first 100 days,” before I was inaugurated, "that we'd administer 100 million shots in my first 100 days.”The US, which is the worst affected country from the pandemic, has reported 28,004,311 cases and over 495,000 deaths, according to Johns Hopkins tracker.