host: this is andrew dunn with us this 40 minutes -- 45 minutes. the phone lines, eastern or central united states, (202) 748-8000. northern or pacific -- mountain or pacific regions, (202) 748-8001. it was earlier this week that health and human services secretary alex azar changed how doses will be allocated. [video clip] effective two weeks from now, we are changing how we allocate first doses among the state. in order to make sure doses are being put to use and put to use for the most honorable. we will be advocating -- allocating them -- based on states and based on the size of the 65 and over population in each state. we are giving states two weeks notice of the shift to give them the time necessary to plan and to improve their reporting if they think their data is faulty. this new system gives states a strong incentive to ensure all vaccinations are being promptly reported, which they are currently not, and gives a strong incentive to ensure doses are going to work protecting people rather than sitting on shelves or in freezers. with case co

you are on with andrew dunn.ler: my first question is efficacy, it is probably early in the program for numbers to come back how many people are getting the vaccine and still got the virus? number two, the quality control of this standards -- standards, -- though standards, are we making sure that each dose that comes out of these companies will provide the efficacy? i will take my answer off the air. host: thanks for the question. guest: effectiveness, i think there is some nuance that is important as far as the main clinical studies here, we are seeing if these vaccines can prevent symptomatic's. they are not testing whether this would block infection of any kind, asymptomatic or transmission of the virus. this has led to one of the top unanswered questions regarding the vaccine, do they prevent you , if you get the vaccine successfully, could you still get infected with the virus and on lowing late -- unknowingly spread to others? we have seen about 40% or 50% of the spread comes from asymptomatic cases. when

st: health care reporter andrew dunn back for a discussion on vaccine distribution and president-electoe biden's distribution plan. where do we stand now when it comes to the number of vaccines that have been given, and how does that compare with the trump administration's original projections of where we would

monday morning, a conversation with covid distribution efforts with andrew dunn then we'll talk about house republican agenda after donald trump leaves office. watch c-span's washington journal live at 7:00 eastern friday morning and be sure to join in with your phone calls, facebook messages and tweets. >> on friday, avril haynes, the biden administration's nominee to be director of intelligence testifies before the senate intelligence committee. watch live at noon eastern on c-span or listen on the free c-span radio a.m. >> the united states supreme court heard three oral arguments this unique dfment week. listen to all three at c-span/supreme court. fan v. sanchez, a case on the detention of non-u.s. citizens and bond hearings while they await transportation. they also heard a case concerning a go college -- georgia college's civil suit against the school -- school and the f.t.c. on injuxes and