Covid-19 vaccinations could save thousands of lives and billions of dollars this winter. A new analysis suggests that if more people in the United States get their booster by the end of the year, about 90,000 Covid-19 deaths could be prevented this fall and winter. But if booster vaccinations continue at their current pace, the nation could see a peak of more than 1,000 Covid-19 deaths per day this winter, according to the study, published Wednesday by The Commonwealth Fund. There are now more than 400 daily Covid-19 deaths, on average, in the United States. “When you look at the...