“The Americans who have died of covid-19 in recent days and weeks — the people whose deaths have pushed the total U.S. loss from the pandemic to nearly 600,000 — passed away even as their families, friends and neighbors emerged from 15 months of isolation and fear. The juxtaposition is cruel: Here, masks off; workplaces, shops and schools reopening. There, people struggling to breathe, separated from loved ones, silenced by ventilators,” The Post’s Marc Fisher, Fenit Nirappil, Annie Gowen and Lori Rozsa report.