County Outbreak News Today

New findings on breakthrough infections. three out of four people infected in a county outbreak were vaccinated. the findings further support the urgency underlying in that agency document that breakthrough cases may be as transmissible as unvaccinated cases. it goes on to call for universal masking for everyone, meanwhile in, washington, the white house is struggling to keep up with its own messaging on the evolving threat of the delta variant. joining me now is nbc news white house corresponde...