with none to me and how corporate greed is prolonging the out the betterment we also talk to dr brandegee host of congressional dish podcast about foreign policy sit tight the show starts meryl. the laura. bush. president santos for our top story today scientists and health experts say the u.s. is unlikely to achieve herd immunity from coated 19 so far at least half of all adults in the united states have received at least one dose of a corona virus vaccine but daily vaccination rates are slowing now it's possible that enough people could gain immunity through natural infection in the future to reach the herd immunity threshold but with mutant variants becoming more transmissible experts say it's unclear whether that's ever going to happen the predominant strain currently circulating in the us is 60 percent more transmissible than the original variant when diseases spread easier it takes a higher number of immune individuals to protect the most vulnerable members of society experts now estimate that roughly 80 percent of the population would need to be vaccinated or gain immunity through