nprnews_____ = ||| lubuntu at wor2 670N|||A Rocky Road On The Way To Herd Immunity For COVID-19||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||At least 70% of people will need to be immune from the coronavirus before COVID-19 can recede through a process known as herd immunity. Vaccines can play a role. But reaching the goal won’t be easy.