KNTV NBC Nightly News With Lester Holt August 14, 2021 00:42:00
Because there is not enough data. the cdc pointing to studies that show 40% of hospitalized breakthrough cases involve those with weak immune systems. but the agency is not calling the third dose a booster. >> very clear the cdc is labeling this a third dose as appropriate because the first two doses were not adequate enough to get the full potential of immunity. very different from a booster dose >> as hospitals face a crushing wave of new covid cases, experts say boosters for the fully vaccinated are likely a matter of when, not if in louisiana, critical care nurse and cancer patient mary la...