But theyre also finding empty shelves. It is clear the coronavirus has caught everyones attention and is prompting changes. Local businesses and schools are making difficult decisions in the midst of this emergency. We have a lot to get to. Lets begin with that new case in Santa Clara County. How did the patient contract the coronavirus . Much like that case in Solano County, right now no one knows. She didnt travel overseas, and shes not aware of having any contact with any infected person. Nbc bay areas ian cull is live at El Camino Hospital in Mountain View where theyve confirmed they treated a coronavirus patient there. Ian . Reporter thats right, janelle. The hospital and Health Department are not sharing many specifics. We do know in this most recent case it is an older woman who has Chronic Health conditions and was hospitalized for trouble breathing. She had difficulty breathing. Officials say they are changing the way that they respond to the coronavirus, and Everyone Needs to get ready. Tonight the second patient in the u. S. Who doesnt know how they got the coronavirus is being treated in a Santa Clara County hospital. Health Officials Say its a signal the virus is spreading. The virus is here present at some level, but we still dont know to what degree. Reporter the patient is in an unidentified older woman. Her doctor contacted Public Health after seeing her wednesday. They know its not linked to the two other cases in the county, and theyre not saying where she lives or works. Since receiving the results last night, weve been working to identify the womans contacts and to understand who she might have exposed while contagious. Reporter and the focus has shifted from prevention to slowing the spread. Start thinking about family preparedness and what you might need to do if you need to stay home for a week or two. Its most likely spread by droplets that would be spread by somebody who is infectious, around six feet around them. Reporter we also know the woman did not go to Solano County where the similar case was confirmed wednesday and bureau evacuees were being isolated. So i asked the cdc how do they know when someone who is infected is not contagious anymore. Were looking at that very carefully, but theyre not cleared, for instance, from isolation until they are testing negative and their symptoms are resolved. Reporter that woman is in isolation. Now, the county says that it has isolation rooms in all 11 of its acute Care Hospitals around the county. There are many more hospitals like it in the bay area. Also saying that the number of rooms that they have depends on the size of the facility. Live in Mountain View, ian cull, nbc bay area news. Thanks, ian. Now lets go to sergio quintana. Hes live in vallejo at the Solano County department of Public Health. Sergio, these new cases have prompted a new stage of readiness for Health Care Workers. How are they preparing . Reporter well, theyre preparing by making sure that there are some supplies available obviously at hospitals. But the public, theres a lot of people who prosecute also stoar and they say the best advice is to simply not panic. Between the fingers and i try to get on the nails. Reporter this woman thoroughly washes her hands with antibacterial solution every time she gets in the car. She has reason to have real concerns about coronavirus or covid19. It was 2016 when i service zika. So now i understand. Reporter she and marta already have plenty of antibacterial gel, wipes, and even masks, but theyre looking for more for other family members. I just came from martinez, from home depot, because they told me they probably had some. Ive been five different home depots already. Reporter she drove to the Ace Hardware Store in el sobrante. Unfortunately theyre also out. These were filled up four days ago. We sold out just yesterday. We had to start putting a limit on it because people were coming in trying to buy 10 and 12. Reporter these ace hardware workers say customers are only allowed to buy two per person but they sold out anyway. And the masks are not the only items flying off the shelves. A. The target store in vallejo, theyre out of antibacterial hand sanitizer. The constant message from Health Experts is very basic. The best defense for the public, stay away from sneezing or coughing people and constantly wash your hands. We probably see medical shows on tv. Wash your hands like a surgeon does, all over, 20 seconds with soap and water will kill the virus. Reporter sergio quintana, nbc bay area news. New at 11 00, hours after oregon received the cdcs new test kits, Health Officials confirmed the states first presumptive coronavirus case. They say it is likely a community transmitted case. Heres a look at the latest numbers across the u. S. The cdc is reporting 66 cases nationwide as of this hour. The rise in cases is causing stocks to fall. Wall street experienced its worst week since the financial crisis in 2008. The dow plummeting 12 this week. 3,500 points, the largest weekly point loss ever. As the virus spreads, the potential effect on the economy could worsen. What this means for the port is loss of volume. What it means for consumers is your products might not be on the shelf. What it means for the community is people arent going to work. The fed is promising it will act appropriately to support the economy amid an outbreak. The coronavirus is also forcing bay area businesses and schools into difficult decisions about how they proseeceed in t face of a growing outbreak. Nbc bay areas jean elle has been following that part of the story for us tonight and joins us live in San Francisco. Jean . Reporter garvin, here in San Francisco, 20,000 people were expected here at the Moscone Center in mid march for the Game Developers conference but organizers have decided to postpone that event. Public health Officials Say its time to prepare for disruptions related to efforts that will aim to prevent the spread of the virus. Thousands of people planning to attend the Game Developers conference in march are now asking about refunds. Organizers announced they are postponing the conference. Public health Officials Say businesses and schools need to prepare to adjust to a developing situation. Schools should plan for absenteeism and explore options for learning at home and enhanced cleaning of surfaces. Businesses, wherever possible, can replace inperson meetings with video or telephone conferences. Reporter Palo Alto Unified School district informed its community it removed two students from schools today because their parent may have been exposed to coronavirus. One of those students foes to palo alto high school. Tonight a parent there says its a smart decision. I think thats cautious move to do. I get that they make this decision quickly. Otherwise, we will be even more concerned. Reporter the other student goes to jls middle school. The superintendent says the students wont be allowed back in class until the district has more information. At this point vivian wong says she does not plan to keep her son home from school, but her family will not be going out this weekend. We will try to avoid going to places that are too crowded like restaurants, things like that. Reporter as the virus spreads, some medical professionals are telling patients who have been in areas with high numbers of infections to postpone appointments for at least two weeks. And airlines are canceling flights into impacted regions. Jean elle, nbc bay area news. Well, developments in the outbreak are changing by the hour, so weve created a Coronavirus Crisis center to make sure you have the information you need. Tonight the demand for masks, you can imagine is surging as more cases pop up across the u. S. And around the world. So 3m is ramping up production, especially of its n95 respirator masks. Employees at this 3m plant in south dakota are now working seven days a week to make more of these n95 masks. The cdc isnt recommending Healthy People wear masks, only for people who are sick with any kind of respiratory virus. Theres a global shortage so they should be saved for Health Care Workers taking care of sick patients. When should you see a doctor . Heres what Health Officials are suggesting. If you have cold and flu symptoms like wheezing, runny those, sore throat, fever, if youve traveled to any of the coronavirus hot spots overseas or if youve been in contact with someone who has. If you have a question about the coronavirus, we want to hear from you. Leave a comment on our Facebook Page or send us a tweet or dms on instagram and we will work to find an answer for you. We do have progress on one front in the fight against the virus to report. Coronavirus testing kits have arrived at a richmond lab. The lab is one of several across the state thats already been processing test results. The state will now distribute the kits to local Health Departments so they can process tests as well. California has about 1,200 kits right now. The fda will also soon allow private labs to create more. Silicon valley is stepping up to help track down a cure for the coronavirus. Newarkbased adam bio is making Computer Generated copies of the virus. They can then send parts of it to other Biotech Companies in order for them to study. We build virtual models first in a computer and identify Different Properties of the coronavirus or bits and pieces of it. Then we take that information and convert it into physical entities. Atum says the big benefit to this is the ability to study the virus safely. This is a story we will be covering for weeks, if not months. An entire section of our website is dedicated just to the coronavirus. One of the stories there right now, how fear of the outbreak has hit some local asian businesses hard. Many reporting a huge drop in business. You can read more at nbcbayarea. Com. Im chief meteorologist jeff ranieri. Major weekend changes. Were tracking the wind and colder temperatures. Ill have that in about seven minutes. Plus a death defying landing caught on camera at san jose airport. The critical moves the pilot made, keeping everyone on board safe. And super tuesday is just four days away. So who will be the leader of the pack coming into california . The new poll just released today. Growing up in la, bad air forced us indoors. And now we have to deal with this. Climate change is an emergency. Thats why i wrote the nations most progressive climate law. And thats why im endorsing tom steyer. Because when big oil tried to stop our clean air laws, he led us to victory. Same with the keystone pipeline. When tom says we can save the world and do it together believe him. Im tom steyer and i approve this message. Can we go get some ice cream . Alright, we gotta stop here first. From smarter atms, to after hours video tellers comcast business is connecting thousands of banks to technology that turns everyday transactions into extraordinary experiences. Hi there. How are you . Do you have any lollipops in there . laughing no, sorry. Were helping all kinds of businesses go beyond customer expectations. How can we help you . The race for the democratic president ial nomination has shifted to the south. Joe biden and Bernie Sanders made their last pitches to voters in South Carolina tonight. Those voters could bolster sanders frontrunner status or take some wind out of his sails. Nbcs jay gray has the latest from columbia, South Carolina. Reporter on the eve of the primary South Carolina gets to reset this race. Reporter a final push for votes in the palmetto state. I think youre going to make me the next president of the united states. I think we got a shot to win this. Reporter most analysts say joe biden must win this after poor showings in iowa and New Hampshire and a secondplace finish in nevada. Biden looks like the guy who can win South Carolina. Mmhmm. Which we have been saying since last year. Right. Weve always sort of thought of it as somewhat of a firewall. Reporter the latest poll shows the former Vice President with a 20point lead. But undecided voters like Mary Beth Barry could change those numbers. Im in a really big dilemma about what im going to do. A dilemma she took directly to joe biden during a town hall. You see elizabeth warren. You see that fire. Thats what im looking for. What is your fire . Decency and honor and restoring this countrys reporter while the man they want to replace if South Carolina is trump country, let me hear you scream reporter held a rally in charleston just hours ahead of the polls opening. This november we are going to take back the house. We are going to hold the senate, and we are going to keep the white house. Reporter both sides looking to light a fire heading into the weekend and super tuesday. Jay gray, nbc news, columbia, South Carolina. And here in california, the countdown is on to super tuesday. Jill biden campaigned for her husband in San Francisco today at fort mason. Voters took a very positive took away a very positive message. She is a great contribution, and he is a great contribution. You know, they want to make a contribution to humankind in a positive and impactful manner, and thats very obvious. And im hoping for that, and i want to wake untp the morning after the election and be in a great celebratory mood. And two democratic president ial hopefuls are set to make stops in the bay area this weekend. Hawaii Representative Tulsi Gabbard will be in San Francisco tomorrow for two events including a town hall. And senator Bernie Sanders is back holding a rally in san jose at 1 30 p. M. At the Convention Centers south hall, which can hold up to 11,000 people. New numbers show Bernie Sanders has a solid lead ahead of californias primary. A uc berkeley poll released today shows 34 of voters back sanders. Elizabeth warren is in a distant second with 17 followed by Mike Bloomberg and pete buttigieg. Joe biden is polling even further behind with 8 of voter support. Well, are you still undecided . On our website, we have a complete voter guide. Go to nbcbayarea. Com slash election guide. Tonight a strange twist in the San Francisco corruption probe. The city bought 5 million worth of public garbage cans from a vendor with ties to ousted public works director mohammed nuru. That one supervisor says actually make the citys litter problem worse. Heres Investigative Reporter jaxon van derbeken. Reporter San Franciscos streets are lined with these distinctive green metal garbage containers, which are supposed to allow for recycling as well. The garbage can that is standing right there is a terrible garbage can. It is a joke. Everybody in San Francisco knows it. Reporter supervisor aaron peskin says recyclables end aga winds up on the street. Our streets are littered with trash cans that are helping litter our streets. Reporter peskin told us he could never understand why the citys public works director, mohammed nuru, wanted them until now. It turns out nuru had ties to the vepdor, alternate choice, llc. The 5 million garbage contract is signed by the daughterinlaw of this man, walter wong. Thats nuru standing next to wong in this picture. Federal investigators searched wongs businesses recently, including the garbage can company as part of their corruption probe into nuru. Investigators allege contractor 2, sources identify as wong, arranged for nuru to get expensive gifts, including trips to china in exchange for getting a Development Project on fulton street permitted. No one at wongs office would talk to us, but this week the city finally canceled the contract for those garbage cans. Jaxon van derbeken, nbc bay area news. If you have a story for our investigative unit, call 888996tips or visit our website, nbcbayarea. Com investigations. The weekend is here and we have a major cooldown arriving. Some places going down 20 degrees. Thats right. How do you guys feel about that . Its fine. Id rather have rain. Okay. Yes, im with you on that. The cooldown is kind of like a happy medium here for us. At least it wont feel so strange out there like those 70s and 80s that we had this week. And also to top it off, not good news here. Well go down as the driest february on record in San Francisco, the driest since 1864 with not a drop of rainfall picked up this month. Now, i will have more on some march rain chances here in just a little bit. But lets bring you right into that saturday morning forecast first. We are going to start off here mostly sunny. A little bit on the colder side. Down to 42 in the trivalley. Peninsula 48. High clouds in the south bay and 46. Over to the east bay, hazy sunshine, 42. A little bit of fog in San Francisco and 46. For the north bay, a great start and 41. So all week long with that record heat weve been looking ahead towards these weekend changes. Everything is on track with this. I see a storm system dropping down from the north. Number one thing this is going to do is push that recordsetting heat off towards the west. And as that system drops down, well look at those colder temperatures and also a little bit of wind kicking up. Lets bring you into those temps as we head through tomorrow. Down here across the south bay, no more 70s. No more 80s. Back down to 64 in east san jose. 62 in los gatos. More of this over to the east bay. 66 in pittsburg. 64 walnut creek. 61 in oakland. Peninsula feeling the chill. Winds picking up to 15 miles per hour. 62 in redwood city. 59 san mateo. Becoming gusty in San Francisco. 24mileperhour winds and 59 in the mission. And across the north bay, you ask see were down to 67 in napa and 61 in clear lake. With this wind picking up a little bit tomorrow, i think the biggest problem a lot of us will be finding is our allergies. If you missed our pollen report, notice juniper, cypress, cedar, pine all in high category. So you might have to limit your outdoor exposure. I got another idea for you. If you want to head up to lake tahoe, fresh snow is always good to help your allergies out. We are getting fresh snow saturday night and sunday. Squaw valley, Alpine Meadows is open. Three to six inches is possible. Something up there to kind of freshen things up for you. You can see in San Francisco down to 55 on sunday. Well warm it back up next week with dry weather as we head all the way through the workweek. For the inland valleys, instead of those 70s and 80s, down to 55 degrees on sunday. 20 to 45mileperhour wind gusts possible by sunday night. Just a 50 chance here of a shower. Go back up to some 70s by tuesday, wednesday, and thursday. Now, what im looking at right now for those rain chances is march 8th through the 12th, a 65 possibility that we could see some widespread rainfall return back to the bay area. So everything is still lining up for that storm window to possibly open up. Well let you know either way how this progresses as we head into next week. Its going to be crucial by next monday, tuesday, and wednesdays updates and well be here for you on that. Well be watching. You got it. Up next, a special Birthday Party for twins. One is turning 4. The other is celebrating his first birthday. They look the same age. Were going to explain how its possible. Stay with us. Vo while other candidates argue about health care, Mike Bloomberg has a record of doing something. As mayor, he protected womens reproductive rights. Expanded Health Coverage to 700,000 new yorkers. And decreased infantmortality rates to historic lows. As president , hell build on obamacare, cap medical costs, and will always protect a womans right to choose. Mike bloomberg a record on Health Care Nobody can argue about. Mike im Mike Bloomberg and i approve this message. Wean air force veteran made of doing whats right,. Not whats easy. So when a hailstorm hit, usaa reached out before he could even inspect the damage. Thats how you do it right. Usaa insurance is made just the way martins family needs it with hasslefree claims, he got paid before his neighbor even got started. Because doing right by our members, thats whats right. Usaa. What youre made of, were made for. Usaa president ial candidates trying to snag hundreds of california s delegates. The new weekend developments ahead of tuesday s primary plus coronavirus fears. Your questions from social media answered as the concerns continue. Monday morning from 4 30 to 7. All runways at san jose airport back open after a pilot was forced to make this emergency landing. The pilot lowered the plane slowly, headed for the foam sprayed on the runway. The plane slid on its belly after its landing gear malfunctioned. The pilot circled the airport for 90 minutes first burning off fuel before this daring and successful emergency landing. Obviously a lot of nervousness for his passengers and his well being. The pilot and three passengers arrived from idaho. Everyone walked away unharmed. A scary sight in San Mateo County as flames burned dangerously close to homes tonight. The question is what started this fire on san bruno mountain. Sky range captured smoke and flames at the campground area. Some people tried to put out the flames with garden hoses. Many of them said they were nervous because of the dry, warm weather weve had days. No homes were burned and fortunately no one was hurt. Get ready for some bus changes this weekend in San Francisco. Muni says it will reroute its buses because of matrix filming. The delays will take place all around the financial district. This is whats been happening around the city so far. It included explosions, cars flipping, lowflying helicopters and, look, keanu reeves. Hes been spotted around town. You wont have to deal with these delays much longer. Filming is expected to wrap up this sunday. The giants on nbc bay area tonight. We have sports next. Happening now, a plan to transport coronavirus patients from Travis Air Force base to Orange County has been canceled. Federal Authorities Say theyre dropping plans to house patients in costa mesa after the city filed a restraining order to stop the plan. Another hearing is scheduled for next week. Were back in a moment. We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard. President kennedy knew settling for halfmeasures wasnt good enough. So when candidates say we cant guarantee health care for all, make College Affordable for all, combat climate change, or create a world at peace, remember that america is best when we strive to do big things, even when its hard. Im Bernie Sanders and i approve this message. You know, the happiest place on earth, but. Have you flown the fastest hunk of junk in the galaxy . Or channeled your inner jedi . You gotta love that. Have you raced through radiator springs . Or struck a power pose with them . Now is the perfect time to feel like this. And this. And definitely that. Kids enjoy the magic for just 67 per child per day, with a 3day 1park per day ticket. Lets get to sports. Spring training in full swing. Giants had a lot of action with two games today. Tonights game against the rockies aired right here on nbc bay area. Pretty tight game until the bottom of the sixth. Elliott ramos hits his first home run in a giants uniform. The homer propelling the giants to a 96 victory. The giants win both games, also beating the royals earlier in the day. The as played this afternoon against the cincinnati reds. Reds way ahead all game. As scored one run in the ninth. They lose 101. And the warriors are on the road. They left for phoenix today. They face the suns tomorrow night. This is the fourth and final match skbrup between the two teams. The dubs trail the suns 12. Well be right back. Awesome internet. Its more than just fast. It keeps all your devices running smoothly. With builtin security that protects your kids. No matter what theyre up to. It protects your info. And gives you 24 7f nd. Even that that petcamera thingy. Nfo. [ whines ] can your internet do that . Xfinity xfi can because its. Simple, easy, awesome. [ barking ] fisnt just about polar bears. Were fighting for our lives, were fighting for clean air and clean water. Thats why i wrote the law to send billions from polluters to communities suffering the most. And only one candidate for president was with us back then, tom steyer. And hes still fighting for us, pledging to make clean air and clean water a right for everyone, regardless of your zip code. Thats the truth. Thats tom steyer. Im tom steyer and i approve this message. Vo iand there are doers. Lkers Mike Bloomberg has spent his life getting things done. Started a company from scratch, creating 20,000 good paying jobs. Thats getting it done. As mayor, he rebuilt a shaken city after 9 11, created over 450,000 jobs. Expanded healthcare to 700,000 and raised teacher pay. Elected for three terms because he got things done. Mike beat the nra, strengthening gun laws. He beat big coal, closing over 300 dirty coal fired plants. Mike is still getting things done. So ask yourself. For president , do you want a debater or a doer . Someone with workable, common sense plans to fix healthcare and create jobs, whos done both. Mike has the record and resources to beat trump. And it will take both. But mike will get it done. Bloomberg im Mike Bloomberg and i approve this message. A pair of twins celebrating their fourth and first birthday at the same time. How is that possible . Well, these are the twins, miles and walter. You see miles was born on february 28th, 2016. Minutes later, walter was born but that would have been on february 29th, leap day. I dont know if you guys know but that only happens once every four years. But the twins celebrated both their birthdays today, really turning 4 doctors at the berkeley hospital about 1,400. I was saying miles and walter should celebrate right now. So for 30 minutes, it will be the 28th. Then they can go into midnight. Well just have these 4yearolds stay up until midnight and celebrate walters birthday. You know somebody who had the same thing happen, right . Yeah. My friends son william was born on the 29th but they celebrate it mostly on the 28th. Happy birthday. Yes. Happy birthday william. Whats the weather going to be like . One Weather Forecast was different today and the other gets dramatically different. Down to a colder 66 tomorrow. A little breezy. Winds pick up sunday night. Only a slight chance of a shower. A lot colder this weekend, so get ready for it. We are. Youve been prepping us for that. Cant wait. Have a great weekend, folks. Bye. [ cheers and applause steve from studio 6b in Rockefeller Center in the heart of new york city, its the tonight show starring jimmy fallon