Once the elders have been vaccinated, how long before you can meet (and hug) them? SECTIONS Once the elders have been vaccinated, how long before you can meet (and hug) them?New York Times Last Updated: Dec 28, 2020, 11:16 AM IST Share Synopsis Family members are hopeful that before too long, they will return to visiting parents and grandparents and other loved ones regularly again. iStock The Pfizer and Moderna vaccines both require two injections — the initial shot and a booster three or four weeks later. Von Preyss-Friedman recommends waiting at least two weeks after the second shot to have a visit.