CDC director Walensky speaking on Covid

CDC Director Walensky is speaking on Covid. Says:

  • vaccine protection against severe disease remains relatively high
  • US study of nursing homes shows a vaccine effectiveness declined to 53% with entry of Delta variant
  • data conference that vaccine protection against severe disease and hospitalization currently is holding up well
  • overall vaccine effectiveness is decreasing for the Delta variant
  • data from Israel show increased risk of severe disease among those vaccinated early