The United States is likely to miss President Joe Biden’s goal of having 70% of U.S. adults partially or fully vaccinated against the coronavirus by the July 4 Independence Day holiday; but, the White House says the U.S. could reach that mark for adults 27 or older. In a new assessment Tuesday of the country’s vaccination effort, COVID-19 response coordinator Jeff Zients is expected to say the federal government now will focus on convincing those who are 18 to 26 years of age to get vaccinated, a White House official said. Many young U.S. adults, for various reasons, have shown little interest in getting vaccinated, especially since the number of new coronavirus cases and deaths has fallen sharply in the country in recent weeks and many businesses have reopened without facemask and social distancing restrictions that had been in place for more than a year. Overall, …