U.S. President Joe Biden on Monday received his coronavirus vaccine booster shot, after health authorities approved a third shot of Pfizer Inc.'s vaccine for older and higher-risk individuals last week."Boosters are important," the 78-year-old president said, while noting that "the most important thing we need to do is get more people vaccinated."Under a recommendation issued by the U.S. Centers for Disease Control and Prevention on Friday, people 65 years of age and older as well as long-term care residents should receive a booster shot of Pfizer's COVID-19 vaccine at least 6 months after …READ FULL ARTICLE