Getting as many people aged 60 and older in this country vaccinated against COVID-19 will reduce deaths across all age groups and not just seniors, according to researchers at Harvard, the University of Chicago, and the University of Colorado. The study, which was published in the journal Science, used a mathematical model to look at how different vaccine distribution plans impact disease spread and deaths. In Israel, a country which has vaccinated a large percentage of its population already, researchers have found a 60 percent reduction in cases just three weeks after the first shot is administered. And by Day 23, two days after the second shot, there is a 60 percent drop in hospitalizations among vaccinated people aged 60 and older.