tennessee is under a state of emergency right now after severe storms and at least one tornado ripped through the nashville area killing at least 24 people and injuring dozens more. we'll continue to follow this story. that's it for me. thanks very much for watching. erin burnett "out front" starts right now. "out front" next, trump under fire for his handling of the coronavirus epidemic, blames obama. now an aide to a republican senator says trump's claim is false, as the death toll in the united states rises. plus the cdc investigates another cruise ship with the coronavirus. we'll hear from an american who was quarantined. more super tuesday delegates have just been awarded this moment. where do things stand now? who's ahead? joe biden? bernie sanders? let's go "out front." good evening. i'm erin burnett. "out front" tonight the breaking news. the coronavirus hits another

cruise ship. the cdc now working with officials in california after discovering another cruise ship with confirmed case ts of the virus. that ship called the grand princess now getting ready to dock in san francisco. coronavirus cases were traced back to the ship's previous voyage. all right. now, this comes as the number of confirmed coronavirus cases in the united states stands at 157. it has been rising through the day. it's up 54% in the past two days, increased in part due to more testing. we are seeing growing numbers around the world. in france, the number of cases spiked from 73 to 285 in one day. now, officials in california are also tonight confirming another death which brings the death toll in the united states to 11. it is serious, and yet president trump continues to have people question his credibility when it comes to his response. here's something he said today. >> the obama administration made a decision on testing that turned out to be very

detrimental to what we're doing. and we undid that decision a few days ago so that the testing can take place in a much more accurate and rapid fashion. >> the problem with all of that is it's not true from everything we understand. an aide to republican senator lamar alexander tells cnn that the obama administration never made a change to rules regarding testing. now, it's times like this it is imperative that the president be explicit, specific, and accurate. one could use the word honest. kaitlan collins is "out front" live outside the white house. so, kaitlan, the president made that claim which isn't true and the white house is not even explaining what the president meant or why he said this tonight? >> reporter: no. we reached out to them multiple times looking into this trying to figure out what rule it is, what decision the president was talking about. when we went back to them and said there was no obama era decision about this, they have

not given us a statement about why it is the president made this claim and of course he later relied on the vice president and the cdc commissioner to try to really back him up on what he was saying when reporters asked him for clarification. we are being told tonight there was no change like this made. during the obama administration, they did propose a rule that would give the food and drug administration more oversight over this diagnostic testing happening at labs, but we're being told by a republican senator's office that that rule was never finalized, never happened, and therefore the president saying he undid this is not true. this did not happen. local officials raising concerns about their ability to test people. it's become a focal point in the administration's response to coronavirus. and erin it really comes under increasing scrutiny tonight because this comes at a time when the trump administration and this white house is really

trying to put their best foot forward here, trying to say yes, we are adequately e pr paired to handle this. they are facing criticism from democrats. the president is putting false information trying to say it was the obama administration is the reason they're hampered in efforts when that's not the case. >> thank you very much. i want to go to lieu correa. he sits on the house coronavirus committee. he attended a coronavirus briefing from vice president mike sense today. congressman, what did vice president pence say in your briefing today? >> let me start at the beginning which is this issue should have never been politicized. it should be dealt with by the health officials, by scientists, and not be made a political issue. stop the blame game. get down to fixing the problem. this issue, coronavirus, started in china in december.

what month are we on? we're in early march. and now we're finally beginning to say this is an issue. don't blame obama. don't say it's a democratic hoax. address it and call it for what it is. this is a new norm in the united states. a disease that started in china a few months back is now at our doorstep. and this continued, it'll continue to happen. so, first step, and i'm glad vice president pence was there to say i'm taking control, surrounded by scientists, health care officials. that's what you're supposed to do. vice president controlled the bureaucracy in this country and number two, stick to the sciences. and do not cut funding. >> when he briefed you today, your colleague david cicilline, he said that pence recognized, cicillineny described it at mistakes made early in the process. did you feel vice president pence acknowledged there were

mistakes, and did you feel he is truly in control in doing the right thing now? >> i think we're going in the right direction. i think by him saying i'm in control surrounded by scientists, not yes people, not political people, not spin people, but scientists is the right move. we're investing $8 billion when just a few weeks ago we were it canning ebola virus research to shift to corona. that is not the way to do it. long term we owe it to the public, to the people of the united states, to make sure we are ready to address these issues long term, short term, and be ready to be honest with the public. >> so, president trump today talked about how his administration has reacted. obviously he referenced something that was not true about president obama and testing. but he also said this. let me play it for you, sir. >> we closed the border, as you know, very, very early to the troubled areas.

and that saved a lot of lives, a lot of countries are having a big, big problem, bigger than what we have, frankly. but we closed those borders very early against the advice of a lot of professionals, and we turned out to be right. took a lot of heat for that. >> he didn't exactly close the borders, but he did restrict travel early on by people who had visited china, foreign nationals specifically. was he right to do that? >> i think we need to coordinate with china and other countries around the world because closing a border, stopping a flight, is not going to be the answer. coronavirus has a 1 to 15 day incubation period, and most people -- 80% of people that are infected don't even know they're infected. so, how are you going to stop the spread? the issue is are you prepared as a nation, as a world, to address these issues as they come up on you? and do you have the equipment,

the scientists, the research ready to go at a moment's notice? again, december, when we knew what was happening in china, it's march. three months have gone by that we know of. >> so -- >> not a good response. >> so, united airlines says it's cutting flights in the united states by 10%, overseas flights by 20%. that's all the way through april. and they're saying it's because of coronavirus. hiring freeze at that company as well. what is the bigger risk right now, congressman, the coronavirus itself or fear about the coronavirus? >> i think it's both because we don't have enough information on the coronavirus. again, 80% of individuals that are infected don't even know it. flu-like symptoms. and number two, you can't create a panic. address this intelligently, get the health care experts out there. we were going to try to contain this issue, try to contain the virus because we know 20% of those cases, primarily the

elder, this could be a serious problem. it could be death. so, we just want to make sure that we're dealing with the facts. that is what's important to. me, what the vice president did today was start to address the facts. this is not a hoax. this is not moved forward by democrats. it's actually an issue and it's going to happen over and over again. we need to be ready. >> all right, congressman correa, i appreciate your time. thank you very much, sir. next joe biden building on his momentum as more delegates from super tuesday have just been awarded at the top of the hour. plus elizabeth warren, where does she go from here? as the number of coronavirus cases jump in the u.s., how close are we to a vaccine? we're going to go inside a lab tonight to show you what they're doing. with the sleep number 360 smart bed, it can... with your sleep number setting. can it help keep me asleep? yes! it senses your movements and automatically adjusts to keep you both comfortable.

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biden. actually, erin, his campaign thinks he's going to end up the night about 50 delegates ahead. that lead for joe biden may shrink when all the vote gets counted in california and elsewhere. >> i know there's still votes out there. when you look ahead though, david, how realistic is it at this point where you look at super tuesday where about a third of the delegates are awarded, at this point, how realistic is it that no one heads to the convention with a majority, the magic number of delegates required to not have a brokered convention. >> you see that magic number is 1,991. and i want to show you this chart here. this on the left-hand side here, 48.6% of the delegates allocated is what joe biden has won. 42.8% is what bernie sanders has won. this column over here shows you what they need of the remaining delegates. joe biden needs 50.6% of the remaining delegates.

bernie sanders, 52.6. so, what i'm saying is their win rate right now is below where both of them need to be performing in order to get to 1,991. if it stays that way throughout the process, the notion of a contested convention becomes a bigger reality. i want to show you how early we are in this process, okay? about 37% of the delegates have been at stake so far. the rest of march, you see here another 27.7% of the available delegates are up for grabs. and then in april through june, you get the final 35% of delegates. so, we're still early in this process before we can say whether or not somebody can get to that magic number of 1,991 before the convention, erin. >> all right. thank you very much david chalian. i want to go to david serrata. david, it's good to have you with me.

you heard the delegate math. what path do you see to an outright majority, 1,991 delegates for senator sanders? >> well, look, i think senator sanders is -- you heard him at a press conference today talking about how the race is really coming down to a choice between bernie sanders and joe biden and their records. and as you see senator sanders go to the upper midwest which we're moving into, states like michigan, you're going to hear a lot more about the differences between joe biden's record on, for instance, trade and trade deals that have wiped out the industrial base of the upper midwest and bernie sanders who has fought those trade deals. you're fwgoing to hear a lot mo about bernie sanders working to protect and expand social security and joe biden for 30 years trying to work with the republicans to cut social security. so, the bottom line is that voters are going to hear a lot more now that it is coming down the stretch. they're going to hear a lot more about the policy differences

between joe biden and bernie sanders and what the choice between these two candidates actually means in real world terms. >> all right. so, you had today michael bloomberg endorsing biden and dropping out. senator klobuchar did that, pete buttigieg did that. how much do all these biden endorsements hurt sanders because all of them had support? all of them had delegates, maybe not a lot, but everything counts. how much does that hurt? >> well, it shows that the establishment is coalescing around joe biden. and let's be clear, it's not just those candidates. you've seen stories today about wall street donors starting to open their checkbooks for joe biden, that big money is flowing to joe biden. and that's on top of the fact that he's being bankrolled by a super pac. so, it makes the choice very, very clear. on one side you have bernie sanders, a grass roots funded candidate who is running a grass roots campaign, a multiracial working class campaign.

and on the other side you have joe biden who has told his big donors that, quote, nothing will fundamentally change if he's elected. joe biden picking up big support from places like wall street and from the establishment in washington. that makes the choice very, very clear. >> on that point of establishment, you've mentioned it twice in this answer and senator sanders said it today. his words were the establishment is working frantically to try to defeat us. here is what congressman cedric richmond said about this point that you and the senator are making about the establishment working to take sanders down. here is congressman richmond. >> as he rails against the establishment, i just did not know that african-americans in the south were considered part of the establishment. >> what do you say to that? joe biden did overwhelmingly strongly with that particular group. do you consider african-americans in the south part of the establishment? >> well, let's be clear, bernie sanders did very well among

younger african-american voters. and secondly, when we talk about the establishment, what we're talking ability are the billionaires who are bankrolling joe biden's campaign. >> what about the people voting for joe biden? right? billionaires is only going to be what, 60 votes in the country? >> well, but billionaires fund campaigns. billionaires fund lots and lots of ads. you've got corporations, lobbyists, and big donors funding superpacs. so, what we're talking about when we talk about the establishment, we're talking about the people who are financing the campaigns, allowing them to put on huge amounts of ads, allowing them frankly to distorte bernie sanders' record. so, that's what we're talking about. >> so, are you saying that people are falling prey to that, that they're not able to figure out the truth,that they're falling prey to these ads? they're not voting the way they would normally vote? what are you trying to say about the actual voters themselves who voted for biden? >> what i'm saying is money has power in elections.

clearly money has power in elections. when you have super pacs funds and bankrolling joe biden, when you have a health care super pac, a health care industry super pac that's trying to distorte bernie sanders' position for instance on medicare for all, as we saw in south carolina hundreds of thousands of dollars of ads by the health insurance ads and drug companies fear mongering about what medicare for all really is, that has an impact on the discourse and debate in elections which can have an impact on the outcome of elections. >> so, sanders said, you know, when asked about new reporting that just came out from the "washington post" here, sanders said he spoke with warren earlier today. what can you tell us about those discussions between your team, senator sanders' team and senator warren's team. is she thinking of endorsing senator sanders? >> i don't want to comment on the discussions going on between

senator sanders and senator warren. what i can say is they have worked very closely together on many legislative initiatives. i think they have respected each others' records. they have worked together in a lot of ways. senator warren has got a good campaign. he's thinking about wah had she's got to do. we respect that process. >> one final question. last night sanders lost three states he won in 2016. there was a big drop in support. he said had we been as successful as i hoped in bringing young people in and the answer is no. it is not easy. david, what specifically are you doing to change that? >> well, look, it is true that the turnout in the democratic primary, generally there has been -- it has been somewhat in some cases lower turnout than we expected. and that is a challenge for the entire democratic party, that we need a robust turnout, a robust engagement in the democratic

party in this primary and then ultimately with donald trump. we have an enormous grass roots volunteer operation that is working day in and day out to bring voters out, bring new voters into the process. it is not going to happen -- the success of that is not going to happen overnight. it is an ongoing process, and ultimately though with bernie sanders as the democratic nominee, as we build that process, that will make the party stronger up and down the ballot. it will make him a stronger nominee. it will make us a stronger party against donald trump. and defeating donald trump is the ultimate goal here. >> david, thank you very much. i appreciate your time. >> thank you. thanks for having me. next, elizabeth warren meeting with staff as the pressure builds for her to drop out. so, what is she thinking? plus, for 28 days she was quarantined, both on the coronavirus infested diamond princess cruise ship and then at a u.s. air force base. tonight she is home. she's going to tell you what she went through and what she saw. you don't need to go anywhere dad,

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tuesday where she failed to win any state in full. she did of course get some delegates. she finished third in her home state of massachusetts. is her campaign about to come to an end, and could there be an endorsement. mj lee is out front. warren is under pressure to say something about her future in this campaign. what is she thinking? >> reporter: that's right, erin. we do know for sure that elizabeth warren has some big decisions to make. we understand that she had been in the boston area since her disappointing performance on super tuesday yesterday. but her campaign has been very quiet other than just telling reporters this morning that she is making an assessment about what to do about the future and what path she wants to go down. but we don't know exactly what she is thinking. they have not said much all day. what we do have is an email that her campaign manager sent to stafferers earlier stay in which he acknowledged in addition to thanking them for their work that yesterday was certainly a

disappointment and said they just did not clear the bars they hoped to clear going into the super tuesday. so, elizabeth warren is now trying to figure out what the right way to continue her fight is. that is, according to roger lau. of course the big, big, big question right now is whether elizabeth warren is, one, going to drop out of this race, and two, whether she's going to make an endorsement. over the last 72 hours or so we saw a number of candidates get out of this race and throw their support behind joe biden including just today michael bloomberg. the campaign has not indicated either way whether they are thinking about making a potential endorsement. but of course there's no question, erin, that heading into tomorrow elizabeth warren faces a very pivotal moment for her campaign and also her political career. erin. >> thank you very much, mj. i want to go to former special adviser to president obama, van jones, and gloria borger. van, obviously she has to have

her own soul-searching moments which no doubt she is having. are we at this point at this time where she is going to get out? >> i hate to say it, you can't help yourself, there's no path for her to get the nomination. if you come in third in your home state, you're not going to come in first in somebody else's home state. if you can't help yourself, you're probably hurting somebody else. it's probably time to take a bow. >> as recently as monday, warren insisted she's going to be in this race until the very end. >> the way i see it is i'm out there running to get enough delegates to win the convention. my campaign is built for the long haul. i've done a lot of pinky promises out there so i've got to stay in this. i've told little girls i'll persist. >> how much longer do you see her staying in, gloria? >> well, not longer. i think van is right. she doesn't have a path to the convention of which she could win. i think her big decision now is

does she just get out or does she endorse somebody. ands that of course very difficult for her. but i think they're probably having long, hard conversations inside the campaign about what's best for elizabeth warren and what's best for the things she believes in. and those might not be the same thing. i mean, she might -- if she endorses joe biden, perhaps she could wind up on the ticket. but what does that do to the progressives who believe in elizabeth warren and bernie sanders? >> right. i mean, that's the thing. when you look at the venn diagram, we see who she overlaps the most. warren has been critical of joe biden and bernie sanders in different ways. here she is on biden. >> no matter how many washington insiders tell you to support him, nominating fellow washington insider will not meet

this moment. >> okay. that's pretty direct. then when it comes to bernie sanders, though, remember the whole thing about the conversation they had about she said he told her a woman could never win the presidency. then there was this moment. >> i think you called me a liar on national tv. >> what? >> i think you called me a liar on national tv. >> let's fiat had do it right now. >> okay. those are the two choices for endorsement. >> yeah. that was not a warm and fuzzy moment. but i tell you what, if anything about elizabeth warren stands out, she's progressive. she'side linguistic. she's very, very pragmatic. she is going to make a disciplined smart choice. does she endorse bernie on his way down, it looks like? does she endorse biden on his way up? how does she use her leverage to get the most into the party platform and do the most for her cause. she's not worried about the side

bar moments and stuff like that. i think you're going to see her make a choice that's going to be the right thing for the cause more than the thing that's the right thing for her. >> you raised the word vp. when you look at policy at the point i was making she's all in for medicare for all, biden not for that. she supports a tax for the wealthy. biden opposed that. if biden is the nominee, if warren goes all out for him, what could she get in return? how high of a slot? >> well, look, obviously people are talking about her as a potential vice president shl nominee. and in that role you have an awful lot of influence. she might be able to say to her supporters, look, here's what i demanded from joe biden and here's where he's willing to shift a little bit with me. maybe he's not going to do medicare for all because he

doesn't like it. but there are certain things about my plan that he does like. i think she can -- there are lots of ways to peel the onion here. i think if she goes with joe biden she's going to try and extract something for it and she's going to try and figure out ways that she can support joe biden. if she goes for bernie sanders, it's a different kind of decision. there's not a lot of love lost between them. but they do share a lot of ideals. and sanders said today that he had spoken with her, that she was thinking about this, had not made a decision yet. so, we don't know which way she's going to go. and by the way, she could also decide not to do anything right now. >> right, right, to sit it out. so, van we're talking about endorsements and it's been pretty powerful. it's been an unprecedented moment. bloomberg, you can only imagine how he feels. to have tried and failed.

and they all get in line behind joe biden. and yet obama hasn't. >> mm-hm. well, look, at least from a public posture point of view, you don't want the former president to jump in and put his hand on the scales. why? there thereby a convention and somebody's got to walk out there and get everybody back together. it's been obvious that president obama, beloved by everybody, was putting his hand on the thumb against your person, he can't do that. so, at least nay public posture, he's got to stand back, let this thing go forward, and be the one to bring everybody back together. >> do you believe he believes in joe biden. some people want to read into this why not? chris coons was asked why hasn't he? i wish he has, where is the guy? >> even for hillary clinton against bernie which was much easier, his own secretary of state, against one person, he stayed out of it until it was obvious that hillary was going to win. so, in a crowded field as it's been for him to come out, i think this is going to ogo

forth. this is a defining moment for elizabeth warren. i don't know what she's going to do. nobody knows what she's going to do. she can take her time, but if she goes with biden it says one thing about who she is. if she goes with bernie, it's totally different. with goe we're going to find out who she truly is. >> obama hasn't endorsed, and i agree with van, e he couldn't do it now. he's been a presence in this campaign. how many times does joe biden talk about his good friend barack? and he was in bloomberg ads. and then today he appeared in a bernie sanders ad. so, here's bernie sanders railing against the establishment, and who does he decide to put in an ad praising him? the leader of the democratic establishment, the former president of the united states. >> all hail. all hail. >> that's the way politics is. >> all hail.

>> just says it all. next we first brought you the story of an american author, a writer, trapped on the cruise ship with the coronavirus outbreak, the diamond princess. she is now home. she was quarantined there then quarantined on a u.s. base. we're going to talk to her next, tell us exactly what happened. and we're going to take you behind the scenes to see how scientists are nin a race to create a vaccine to the coronavirus, what's happening right now.

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and accessoriesphones for your mobile phone. like this device to increase volume on your cell phone. - ( phone ringing ) - get details on this state program call or visit breaking news, coronavirus cases have been confirmed on another cruise ship, the grand princess will dock in san francisco when one of two patients tested positive for coronavirus. one of those two has since died. the ship's arrival has been delayed so officials can conduct tests on a number of passengers and crew member who is have developed coronavirus symptoms. this development comes after a

majority of the diamond princess evacuees -- as you know this was the largest cluster of coronavirus cases outside mainland china. they were under quarantine at lack land air force base. "out front" now gay guilty ogay. she was quarantined for a total of 28 days. it's wonder to see your face gay because all those times you joined me on the phone, you are now home. diamond princess quarantined on an american air base. what was it liked to be confined for all this time? >> you know, at first it was really horrible, erin. and then people are strange. you adapt to the new situation. and so we adapted. it was a little harder for some reason at lackland air force base. it was a much stricter quarantine. we really were not supposed to go out of our rooms at all, but they were tolerated if we went

for very short walks and didn't talk to anybody else, didn't get close to anybody else and of course wore masks. but it was good it was a strict quarantine. i mean, it was terrible for us personally. we hated it. but we knew we were doing the right thing for ourselves, first of all for safety. there were doctors watching us every minute. and we were tested twice a day. and we were also doing the right thing for our community, our grandchildren, the country. we wanted everybody to be safe. and i would say now after 28 days testing in japan, swabs here as well and being watched as acutely as we were, we're probably the most virus-free people in the country right now. >> so, you know, let me ask you about that. you talk about the lackland air force base and how strict it was. that's what we want to hear. we want to hear that it was strict and we can be shaur of

what comes out of it. two questions on that, pictures that you and your husband took inside the plane. this is the plane you took from japan to texas. what happened on that flight? when you talk about different protocols? >> well, first of all, the people who were monitoring this and taking care of us on the flight were real professionals, total everything. there were two types. one, the people in the white uniforms. and there were what i call the ghost buster people with the green tops with the hoses like ghost busters and the air supply on the back. and they were the one who is took our temperatures and got closer to us. it was a little weird waking up in the middle of the night and seeing this freakish thing looming over you. but that was very good. we were -- you know, we had not been around other people for two weeks. we had just been alone in our

cabins. so, now we're sitting on buses and also on chairs quite close to other people although they did have enough chairs to have spacing. and then we did learn there were people put in an isolation unit on the plane who had turned positive. in fact, i was standing next to a lady when they came up to her and said she was positive. they were wearing masks. but i have to say that i was very unhappy knowing i was right next to somebody who was positive because two weeks, we've been in isolation. so, i understand why they added 14 more days to our quarantine because we had somewhat broken our quarantine although we were all protected with masks and things. >> right, right. but obviously that's scary. before we go, one other question, gay. there was a county judge in texas. as you know on lackland air force base there was a woman who tested positive and then

negative and then released into the community. it turns out she's positive. obviously there was fear in that community. he had ordered an emergency order that anyone coming out of lackland air force base would have been prohibited from coming into the county. are you concerned anyone was let out who was still positive when you get to the end of the lackland air force base which you describe as strict? >> first of all they were in a different cohort. they were with the wuhan, china people. i can't explain how that was run. they were not near us at all. and i don't understand what happened with her testing. i believe she had actually had the virus. but again that's just reading the same news you have. nobody in our group that that happened to -- if you tested positive or had symptoms like an elevated temperature in the morn, you were taken away from an ambulance. you were taken to a special

facility. you were checked, got the tests, and you had to have two negative tests to get out of there. i don't believe to talk to you. glad you're out. glad you're safe. and as i said, it's nice to see your face this time. thank you. >> thank you so much. and next, president trump urging drug makers to come with a corona vena caaccine now. so, how are they doing? we're going to go inside a lab to show what they're doing. plus don't mess with jill biden. with the sleep number 360 smart bed, it can... with your sleep number setting. can it help keep me asleep? yes! it senses your movements and automatically adjusts to keep you both comfortable. and now, save up to $600 on select sleep number 360 smart beds. only for a limited time. there's my career,... my cause,... my choir. i'm a work in progress. so much goes... into who i am. hiv medicine is one part of it.

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coronavirus continues to spread around the globe and the death toll mounts, these scientists in germany, like countless others around the world, are in a race against time. trying to develop a vaccine as fast as possible, for an illness the scientific world has a lot to learn about. >> well, the challenge, first of all, is that the virus is unknown. so you don't know which kind of protection you need in order to stimulate the immune system, in order to be protected. >> reporter: german american company curevac, whose ceo has been to the white house to meet president trump, makes vaccines by essentially embedding the virus' code into human cells, to help the body protect itself. >> we are making the body to produce your own vaccine or your own drug. >> reporter: each of these little tubes contains a different construct of the virus' code. right now, the scientists at the main lab in germany are trying to find out which one is the safest and most effective to be

turned into a vaccine. while they don't want to put a date on it yet, they believe they're getting closer. >> we are in preparation for a clinical trial. out of the different constructs, we have to get the best ones into the clinics and we're in constant discussions with the regulatory authorities. >> reporter: the pressure couldn't be higher with the number of novel coronavirus cases jumping everything day, president trump at a meeting with drug makers urged the industry to come up with a vane asap. >> we're moving aggressively to accelerate the process of developing a vaccine. a lot of good things are happening and they're happening very fast. i said, do me a favor. speed it up. speed it up. and they will. >> we need to be prepared. >> reporter: while u.s. health officials acknowledge it will be at least a year before one will be certified, the company says it's working overtime to get it done soon. >> if you compare, normal vaccine development takes several years.

we are fighting an outbreak right now, and therefore regulatory authorities are handshands on and trying to do this within a year's time. >> and erin, the folks at the lab do acknowledge that it's extremely ambitious to try to get a vaccine market ready within a year, especially since this virus is still so very new. and there's still fairly little that's actually known about its long-term effects. but one of the things that they are saying is that they've almost never seen this amount of international urgency and information sharing on the part of government, regulatory bodies, and of course, the industry, as well, to get a vaccine very quickly that's both safe and effective. erin? >> all right. thank you very much, fred. and next, jeanne moos on jill biden's epic pushback. cance discovered the pd-l1 pathway. pd-l1. they changed how the world fights cancer. blocking the pd-l1 protein, lets the immune system attack, attack, attack cancer. pd-l1 transformed, revolutionized, immunotherapy. pd-l1 saved my life.

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>> reporter: like a lioness protecting her cubs, jill biden got between her husband and an animal rights protester and seconds after that demonstrator was hustled away, another popped on stage. this time jill biden was hands-on, pushing back. no penalty for holding in this key block. read one tweet, if any nfl teams are scouting for a right guard, jill biden is available. though the takedown was performed by biden's senior adviser, symone sanders, who wrapped her arms around the demonstrator. that's symone in the striped jacket, dragging the woman off the stage, and later tweeting, i broke a nail. evidently, a long nail a small price to pay. one website added a sports sound track. >> watch out! watch out! watch out! watch out!

oh! >> reporter: jill biden was proposed for secretary of defense. just last month, she pushed back on a male heckler who headed for her husband as the crowd chanted to drown out the protests. >> you've got to protect those you love, right? >> back when kamala harris was still in the race -- >> hey, hey, hey, hey! >> reporter: a moveon.org moderator stood up to a protester. >> thank you so much, sir, for your big idea. >> reporter: kamala's husband rushed on stage to help. his protective juices flowing captured in this photo. now it's joe biden's spouse being celebrated as wonder woman and senior aide symone sanders -- >> she reminded me of kevin costner in "the bodyguard." >> reporter: kevin costner took a bullet for whitney houston while joe playfully nibbled on joe's fingers when he waved her hand too close for comfort. better guard her body, joe.

she needs those fingers to protect you. ♪ will always love you >> reporter: jeanne moos, cnn, new york. >> and thanks so much for joining us. "a.c. 360" with anderson begins now. good evening. at the end of a day of major developments in the coronavirus epidemic and seismic changes in the democratic presidential primary, after a super tuesday that lived up to the name for joe biden. first, the breaking news on the outbreak with the number of infections now approaching 100,000 around the world. nationwide, at least 157 known cases in 13 states. 11 fatalities at this point in the u.s. the latest in california. the first death outside of washington state. and just before air time, california governor gavin newsom declaring a statewide state of emergency to address the growing number of cases. officials at the port of los angeles reporting that scheduled shipping traffic is down by about 25% in san