MSNBC The 11th Hour With Brian Williams October 5, 2021 03:47:00
Protection against infection. as to those mix and match options, the nih has been conducting mix and match studies of every single possible combination of pfizer, moderna and j&j. they have already collected the data on using moderna as the booster. i believe they are completing collection of pfizer as the booster as we speak, and will have also soon data on j&j as the booster. so i think by mid to late october, we're going to have that data to inform how best to mix and match. >> we've got about 45 seconds left. our death toll is stuck around 2,000 souls a day, though as we mentioned, new cas...