COVID-19 eclipsed 4 million Wednesday as the crisis increasingly becomes a race between the vaccine and the highly contagious delta variant.The tally of lives lost over the past year and a half, as compiled from official sources by Johns Hopkins University, is about equal to the number of people killed in battle in all of the world’s wars since 1982, according to estimates from the Peace Research Institute Oslo.The toll is three times the number of people killed in traffic accidents around the globe every year.