but even severe infection. that's the signal to say it might be time to do something like a booster. >> let's get insight from the director of pulmonary and critical care in mississippi. i want to put up on the screen, this is the current track of cases. 150,000 new covid cases. that is 13 times higher than the spring low, we were down as low as 1 ,-- 11,000. in the booster debate, there's been a lot of confusion. do you believe the science and what you're seeing on the ground supports the idea that for those, we're on pfizer first, if you got a pfizer vaccine, you should soon get a booster shot? >> yes, i do think it's going to help. i think one of the things that is propagating infections is asymptomatic carriers in the vaccinated population. i think that is what the boosters are going to prevent.