Pandemic expert Robert Redfield is now saying that the wuhan pandemic in the U. S. could be over in four to eight weeks if everybody would wear masks when appropriate, yet what if people continue not always wearing masks when appropriate, would that suddenly make four to eight weeks forty to eighty weeks? So that Redfield said the pandemic could be over in September is indicative that he thinks we are rapidly approaching herd immunity, with or without everybody wearing masks when appropriate.