rachial walensky.recent as last week the thirty shot is not needed because the vaccine protects against severe disease. why are boosters needed if it does protect against severe disease? >> we're monitoring this data in realtime in cohorts across the country and what we're finding now in data released today as you noted we're seeing weening against infection, not yet against severe disease and hospitalization and infection but you need more protection when it comes to the delta variant as compared to what you might have needed for other variants so what we're doing now is seeing the waning happening and seeing what is happening in other countries as they see waning against severe disease and we're acting now to prepare. so now is not the time to get your booster. we're preparing for boosters in late september. >> just yesterday, members of the cdc vaccine task force seemed to contradict exactly what you-all were saying today. let me play this for folks. >> we do want to clarify right away that the need

conference of mayors to discuss our eviction prevention efforts, rachial walensky provided an update on the pandemic and ways mayors across the country can work closely with state and local courts to set up eviction diverse programs in the city. this is the latest in the efforts to communicate and work with local officials to ensure we get assistance out to keep people in their homes. i know we've been here awhile but there are a lot of topics out there. go ahead, josh. >> thanks, jen. with regard to the booster shots, how many shots are available for boosters and will supplied boosters have any impact on u.s. vaccine donations around the world? >> so let me first note that tomorrow the covid-19 team and our health and medical experts will host a briefing and discuss next steps as it relates to boosters. i would also note for your planning that you can expect to hear from the president on this topic as well following their briefings. so i will leave it to them to additional details and to answer what i know are your good questions about data and understanding of what leads to decisio