One vaccine maker. And this news is helping to drive up stocks. The dow closing up about 900 points just moments ago. Well have much more on the economy in a few minutes. First, cnns nick watt is going to bring you the latest on that search for a vaccine. Reporter in the worldwide scramble for a vaccine, good news. This is really a very first important step in the Journey Towards having a vaccine. Reporter all eight subjects in a phase i trial developed effective covid19 antibodies. Next return phase ii, with maybe 600 subjects. If they can enter into phase iii by july, again, the goal of being able to get to a vaccine by early next year, i think becomes more realistic. Reporter so today, massachusetts became the 50th and final state to lay out its plan to reopen. Construction and manufacturing are back. May 25, a Retail Establishment may also offer Curbside Service and some personal services such as barbershops and hair salons may reopen. Reporter in roughly a third of states, the case count is going down, Holding Steady in another third, and in the final third, numbers are actually going up. Texas saw some busy bars and the highest number of new cases on saturday. The opening of restaurants and movie theaters and retail and our malls, up to 25 occupancy a couple of weeks ago, so thats probably the main reason. Reporter still, gyms opened up at reduced capacity in texas today. And the governor announced phase ii. Starting immediately, Childcare Services are able to open. Beginning this friday, may 22, a long list of businesses can now reopen or expand capacity. Reporter gyms in new jersey are not yet allowed to reopen. This one did anyway. Heres how Camden County cops reacted. Have a good day. [ cheering ] reporter in South Carolina, some Stores Opened exactly a month ago. And inperson classes will resume at the university of South Carolina in the fall. But theyll revert to Remote Learning after thanksgiving because our best current modeling predicts a spike in cases of covid19 at the beginning of december. The w. H. O. Says it will start asap a review of the Global Reaction to this coronavirus, saying we must learn to prevent a repeat. We have been humbled by this very small microbe. Reporter and some good news for sports fans, jake. Texas said that a week from sunday, some pro sports will begin again. Theyre talking auto racing, basketball, baseball, no fans, but it will be on tv. California hoping to do something similar, early june. New yorks governor said he will help leagues start again whenever they feel they can. Also here in california, theyre hoping to allow Church Congregations within a few weeks, and also legal haircuts once more, which is good news for those of us who have been trying to cut our own these past couple of months, jake. Nick watt, thank you so much. Joining me now, cnn chief medical correspondent sanjay gupta. Sanjay, lets start with positive news. A vaccine, moderna says people in early studies developed antibodies against the virus. Explain what that means. This is encouraging news, jake. This is a whole new different kind of vaccine. What they did was took a blueprint of a little piece of the virus and they used that essentially to inject into the body. The body then creates this piece of the virus over and over again and the body makes antibodies to it, okay . Thats a little bit hard to understand, maybe, but this is a whole new different kind of vaccine. In the past, jake, you take a little piece of the virus and give that to elicit an antibody response. This is brandnew. We dont know if this is going to work. Were seeing the results for the first time together. What were seeing is when they gave even the lowest doses of this vaccine, the body, the people who got the vaccine, did make antibodies and they made antibodies at the same level as if they had become infected. So when you get infected, you make antibodies. When you get a vaccine, you make antibodies. You take more vaccine, you get even more antibodies. When you actually put the antibodies and the virus in the test tube together, those antibodies seem to neutralize the virus, which is what you want to see, that neutralizing activity. Is it going to have an impact on the virus . The answer seems to be yes. These are early studies, very, very early data, jake, but this is proof of concept. Ive never seen this work before. The investigators havent seen it work before in humans. If this carries out, i mean, that could potentially be some good news. Potentially fantastic news. Thats phase i. What are the next steps as moderna looks to go to phase ii and phase iii in the coming weeks and months . Let me show you the timeline quickly. This is at the heart of all the discussions, when might this be available. Phase ii is already announced, larger trials. Theyre going to do that through sort of the end of the summer, beginning of july sort of time frame. If that still seems to show these results, where you have these signals of efficacy, then theyll start going into phase iii trials sort of by the end of summer or early fall. I mean, the timeline is a little loose there. And each time you go into a new phase, jake, youre incorporating more and more people and youre trying to get a sense what have is the right dose, who are the right populations of people that are going to most benefit from this. Elderly, children, people in between, people with preexisting conditions. Might there be booster shots that are necessary . These are all the questions they want to answer. An important thing, jake, ive talked about this, the u. S. Government is going to make a bunch of gambles, theyll look at this vaccine from moderna and a few others and start manufacturing them even before the results from phase iii come in. Its a gamble because it costs a lot of money to do that, but the reason you do that is then you have the vaccine available. Does this make the vaccine timeline theoretically that we could have something in 12 months, 18 months . That timeline that weve heard dr. Fauci and others say, does it make it seem more likely . Yeah, i mean, you know, i guess what dr. Fauci has said since january, since the beginning of all this when they started working on the vaccine, was 12 to 18 months. Hes always its always a loose time frame. But 12 months would obviously be january of next year. 18 months would be the summer of next year. I mean, its i guess possible to start being able to vaccinate people by early next year if this still goes forward. Again, this is very early data. If it continues to have this sort of efficacy, this sort of effectiveness, you could have some people start to get vaccinated by early next year. Probably that would be health care workers, people at great risk, then you start to gradually increase the population of people who get vaccinated. The question would be how long does it take for the vaccine to kick in. In this study it was 43 days when you started to see enough antibodies to start neutralizing the virus, what is that, a month and a half. You have to think about, does someone need a booster shot. Theres all these considerations. But yes, jake, is the answer to the question, early next year, spring, summer, around that time frame, is conceivable. Lets talk about side effects, because moderna said there are some side effects, including a fever in certain patients. How concerning is that . Yeah, one of the things that the nih came back to moderna with early on and said, in addition to testing this vaccine, we want you to start doing various dosing trials. Theyre doing everything from 25 micrograms to 250 micrograms, a tenfold difference. We actually interviewed one of the participants, at 250 micrograms, he had fever, malaise, did not feel well for a couple of days and recovered and felt fine after we talked to him which was a couple of weeks after he received that second shot. The first shot, he felt fine with. It was the second shot that caused the symptoms. Thats going to be a question mark. Most of the trial participants are Pretty Healthy people otherwise. What happens when you give it to people with preexisting conditions, people who are healthy . Thats the dosing regimen you need to figure out, certain people may need to get smaller doses and then a booster and so forth. And of course we need to continue addressing this with humility given how little we know about this and why it kills some people and not others. Before you go, i want to ask you about this piece you wrote for cnn. Com called if the United States were my patient. Really interesting piece, and you write, quote, we have been infected and we are only part way through the miserable therapy. If we stop now, however, it may not just be back to square one, we may be worse off than we started. The metaphorical resistant bacteria may be unleashed. Explain what you mean by that. What do you mean, we could be worse off . There was two points. Keep in mind, jake, when we started the pause in this country, sort of encouraging people to start staying at home in the middle of march, there were some 80 people who had died at that point and around 4,500 people infected. There was enough of a concern at that time to say we need to initiate these stay athome measur measures. It seems hard to understand, why now, when we have at many people as you see on the screen now infected and as many people who died, now were saying its time to reopen. The virus hasnt changed. Its still out there, its still contagio contagious. My concern is if you have that many people who are infected and you start to open things up, you could start to get significant clusters, even more so than at the beginning of when we started this whole process. By the way, to clarify, the bacteria is treated by an ant b antibiotic. This is a virus. But when you take antibiotic therapy, youre told not to stop halfway through. If you do, the bacteria start to replicate and the infection becomes harder to kill. It was a metaphor i was drawing there. I was in the hospital and realizing over the last few months its been a similar conversation about whats happening in the country. So i thought, to sort of humanize this for people, to make them understand why this therapy is necessary, why we have to be diligent and thorough, i thought i would draw this example of the country as a body. People should check it out, its on cnn. Com. Sanjay, thanks so much as always. Listen to sanjays daily podcast, coronavirus fact vers versus fiction. You can get it wherever you get your podcasts. Trump Administration Officials are publicly arguing with the cdc, a dispute happening all over television. Plus mans best friend can detect many diseases in humans. But are dogs able to sniff out coronavirus . That story, ahead. When you think of a bank, you think of people in a place. But when you have the chase mobile app, your bank can be virtually any place. So, when you get a check. You can deposit it from here. And you can see your transactions and check your balance from here. You can detect suspicious activity on your account from here. 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Plus, free premium delivery setup when you add an adjustable base. Ends monday. In the politics lead today, a feud between top trump Administration Officials and their own Health Experts as spilled into the public view. Today, after the white house trade adviser went on National Television and accused the cdc of letting the country down when it comes to testing, department of health and Human Services secretary alex azar rebuked those comments as, quote, inaccurate and inappropriate. And a cdc official accused the Trump Administration of ignoring the science, as cnns Jeremy Diamond now reports for us. Reporter with the u. S. Death toll nearing nearly 90,000, President Trump and his top officials are shifting blame, finding scapegoats everywhere but in the white house. Peter navarro, a Top White House official, pointing the finger at the centers for Disease Control whose initial coronavirus test kits malfunctioned. Earlier on in this crisis, the cdc, which really had the most trusted brand around the world in this space, really let the country down. That did set us back. Reporter a senior cdc official telling cnn in response, this administration has shown time and time again that it has a problem with science. We are giving them science and they dont seem to want it. And health and Human Services secretary alex azar also firing back, putting the infighting out into the open. The comments regarding the cdc are inaccurate and inappropriate. Reporter azar, instead, tied the u. S. s high death toll, higher than any in other countries, to preexisting conditions in americans, not in President Trumps response. We have hypertension, diabetes. Its about simple epidemiology and stating that if we have hypertension, if we have diabetes, we present with greater risk of severe complications from this coronavirus. Reporter as for the president and his spokeswoman, they are firing at a familiar target. Perhaps i should redirect your question to president obama who left the stockpile empty and it took President Trump to refill it. Reporter today President Trump echoing that false criticism, claiming he was left little by obama, even though he was in office for three years before the coronavirus began to spread. Look, he was an incompetent president. Reporter trump is also attacking obama on other fronts, implicating his predecessor in a baseless conspiracy via twitter as obama spent part of the weekend taking veiled swipes at trumps handling of coronavirus. This pandemic has fully, finally torn back the curtain on the idea that so many of the folks in charge know what theyre doing. A lot of people arent even pretending to be in charge. Reporter as obama addressed graduates, trump was at camp david, huddling with conservative allies, where one source said he was highly focused on how to make his latest obama Conspiracy Theory stick. And jake, the president today was once again unable to define the crime that he claims that the former president committed, saying only that he believes president obama directed the counterintelligence investigation into his campaign. Earlier today, though, jake, the attorney general, bill barr, said that he does not expect that the review of the russia probe will lead to a criminal investigation into former president obama or former Vice President joe biden. President trump today responding to that saying he was surprised by those comments, and he is insisting once again he has no doubt that president obama and Vice President biden were involved. No evidence at all for things he likes to make up like that. Thanks, Jeremy Diamond, so much. Coming up, how long it might take the u. S. Economy to recover as a critical industry returns to work. Stay with us. Tempurpedics mission is to give you truly transformative sleep. So, no more tossing and turning. 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