dive into this so let's bring in dr william schaffner a vaccine specialist with the vanderbilt university medical center dr schaffner it's a pleasure to have you thank you so much for joining us today. my pleasure to be with you know i want to start with your thoughts on these latest moves regarding mcdermott's covert 1000 vaccine what do you make of the reports of the company's progress how important is this move towards human trials and how do these trials exactly work for the layman who maybe is not involved in this regularly. sure well it's a wonderful step forward. would. people who were young healthy people and it showed that the end of body production just. very brisk and it all it's a 2 doze flexi and although there were some side effects some people had the bigger and sore arms nonetheless there were no safety signals of note and the larger clinical trial is now started they intend to give this vaccine to about $3000.00 people that is half the people who are actually in and half the people will get the placebo and then they will be followed for a period of time to see who didn't get scolded and

william schaffner from vanderbilt university medical center. dr. schaffner, let me start with you.ou worked for the cdc. the president says he knows better than the cdc. he's threatening them with this meeting, says the guidelines are too tough and they're going to come up with new ones. yesterday he said he knows better than dr. fauci. he's overruling science at every turn. how dangerous is this at this point? >> oh, erin, it's very sad and it is dangerous. you know, this country has been led in the past through epidemics and when there's threat of new infection such as ebola and zika and the cdc has done an absolutely stellar job. it has the reputation of being the finest such agency in the world by far. and it has been pushed aside and down by the political leadership in washington. that's very sad. and there's terrific confusion out there because the cdc is trying very hard to get a solid public health message out, and there's a black editorial pen coming from the white house that interrupts that message and changes it, often making it much milder, less direct and less useful.

. >> a new study from the cdc and vanderbilt university medical center find that many who get infected with covid-19 may have sympto tt stor. what d lg they could actually last? >> the range of illness that this virus causes is astonishing from absolutely no symptoms in maybe 30, 35, 40% of people to death in some and everything in between and one thing we don't know is whether some people will develop some long-term complications. if you've lost your sense of smell or taste, is that going to result in some long-term impact? we don't know yet. we have to be humble about what we know and what we don't know about this virus and for that reason we have to share all information openly, move forward can fight the virus better. >> dr. frieden, thank you so much for your time this morning. dan, over to you. >> eva, thank you. >>> fresh protests in the streets of portland overnight with citizens facing off against federal law enforcement agents. this just hours after a judge denied the state of oregon's request to restrict the actions of those federal agents. abc's andrew dymburt is in new jer

universally across this entire country, we would save another 35,000 american lives between now and november 1st. >> it seems pretty simple at this point. thank you, nick. outfront now, dr. william schaffner at vanderbilt medical center great to see you again. i want to ask you about this big announcement first that the government and drug maker pfizer have reached a deal to produce 100 million doses of a covid-19 vaccine once it's approved, of course. how big of a deal is this and how unusual is this? >> it is very unusual, kate, but you and i and every other taxpayer in this country are laying some bets. we're helping manufacturers in advance start to manufacture vaccines such that when the clinical trial is finished and we see that the vaccine works, we hope, then we'll already have a stock pile of vaccine in the warehouse ready to go. so, we're betting on a number of different horses simultaneously. we hope they all come in because we need as much vaccine as possible. if the vaccine doesn't work, we'll just have to trash the vaccine, and we've lost only money. but this is unusual. we're doing things simultaneously that we used to do in sequence. that's helping us get there as quickly as possible. >> yeah, that's