building a better bay area, moving forward, finding solutions, this is abc 7 news. >> you are one getting answers, live on abc seven. we get answers for you in real time. today the san francisco mayor unveiled all-new plans to try to lure office workers back to downtown. we talked about her strategy and whether he could help reverse the conditions created by two years in the covid pandemic. also, today is our first workday after an annual ritual of springing forward to daylight saving time. an expert will join us with tips on how to help your body adjust. and insight into whether we need this back and forth at all. first, new covid headlines.

today's the first day many bay area kids are able to go without their mask at school. this comes as a vaccine for kids under five remains elusive and pfizer publicly pushes for a fourth shot. joining us to discuss the new headlines is our guest. thank you for joining us today. the pfizer ceo says a fourth dose of their covid vaccine is necessary. the company has submitted data to the fda. is it necessary, based on everything we know about immunity so far? >> the answer is yes, and maybe yes. if you're looking at the metric of preventing serious disease, hospitalization and death, one would argue please say that the dose is probably good enough right now based on the data we have in the u.s.. if your preventing a breakthrough infection even though it may be asymptomatic or

mount, then you probably need a shot every six month. our immunities -- are antibodies wane after six months. kristen: which criteria will we go by, preventing cases, or preventing serious outcomes? >> it depends on whether or not we are in the middle of a surge and who you are thinking about. take for example, health care workers in the middle of a surge. you may want to prevent infection because right now, everyone who gets infected has to stay home for at least five days. the u.k. and south africa dispense with that in you don't even have to isolate their if you are positive. based on our rules, to protect the workforce, that might be a rationale. if there is a ventral data that more and more older people are coming into the hospital, even after a booster, that might be a rationale to prevent serious

disease by using a booster. kristen: ok, so wait and see. let's talk about pfizer's vaccine for kids under five, the only ones not eligible for any vaccine right now. how is that coming along, because it seemed so close to approval a month ago, but now it feels a lot less complete. >> it's working out to be kind of interesting, from a business perspective. pfizer had banked on using a much lower dose in under 5, 3 micrograms as opposed to 30 micrograms in adult. when they went back to add a third chart, moderna, using a higher dose, is presenting data to the fda. so they may end up being ahead of the curve for their vaccine six and under because they're using a higher dose with two shots instead of three and

pfizer. nevertheless, i think will be close to april to either pfizer with three shots or moderna with two shots and a higher dose. kristen: we will see if the modernity shot is the goldilocks dose and see if they get to the finish line first. a very interesting, this week and it made news, former president obama announced that he tested positive for covid. what do you think is the take away from his case? >> i think the take away from the fact that president obama has contracted covid, is pretty easy to get omicron and even easier to get b march and around the world and supplanting omicron. so i think be careful out there, is not necessarily that the pandemic is still -- it doesn't mean we fear it, but

navigate this pandemic world with care and humility. kristen: he did say he was vaccinated and boosted and his symptoms are fairly mild. >> and he was in hawaii for a bunch of the time kristen:. if people haven't been vaccinated, do you think they still need to at this point, given the percentage of us who have either vaccine or natural immunity and the fact that all these places are dropping their vaccination requirements? >> vaccination is by far the best insurance policy for the future. usually when you get infected naturally, you probably just got infected once. so it's really like getting one shot. it's not really about how you get the immune system to respond, it's the amount of times the immune system gets

reminded. that's why the booster shot is so important. again, not for the now necessarily, but for the future. kristen: gregory wants to know, can seniors get a fourth shot now? i live in san mateo county. >> it's not officially endorsed by the u.s., cdc or anybody at this point, for the reasons we discussed. but i know some people are getting it. in the u.k., it is official for those over 75 to get a second booster. officially i can say we can wait to see what we're doing here. right now it looks pretty good for three shots for most people, preventing hospitalization. kristen: today is the first school day with the state mask mandate on, though some local districts are keeping it wholly or partially in place. apollo suggest californians are pretty split on this. how do you suggest parents

manage this newfound freedom at school and how? >> about five things. is the child immunocompromised? does the child have congenital heart disease? though other risk groups getting sicker than the general pediatric population. who does the child live with? and the three v's, is a child vaccinated, what's a level of virus in the community, and they facing ventilation or other risk mitigation in school? it becomes an individual risk for each parent. to take things that, just focusing on the virus, we've almost landed the plane,

wait until april, like some school district, sacramento, san diego, you're going to get even lower, to where we were june 15, 2020 one. kristen: while we are marching toward an endemic approach, china is taking the strict covid zero crackdown on every case approach still. this we can actually lock down a couple of big regions affecting about 50 million people. does this make sense to you? >> i think it does make sense, unfortunately. not even china can prevent omicron from getting in and infecting a lot of people. the worry i think a lot of people have with china, like we are seeing in hong kong right now and korea to a lower extent is that the population hasn't really seen a lot of covid before. so when they do get it, it's going to run rampant, particularly since china hasn't used a lot of priority vaccines.

they've used the traditional vaccines that are not quite as good as mrna vaccines. kristen: when china makes such a move, and has global impact. one region they've block down is where they make apple products with their factory. so this is definitely something that is impactful. vivian has a question for you. what is considered fully vaccinated now, two doses, or two doses plus the booster? j&j, one dose plus the booster? what is the definition? >> i can make it simple. from a medical perspective, i would love it if someone gets exposed at least three times to the vaccine or natural immunity. officially is probably still going to count as two, but from a health care perspective, i think three is the magic number, if you look at hepatitis b,

measles mumps and rubella, they are all given in threes. kristen: that makes so much sense. three is the magic number. think is so much, always great talking with you. see you later. take care. coming up next, the mayor announces a new plan to welcome workers back into the city. we are breaking down the in new york city, ♪ ♪ there's always something new to discover. ♪ ♪ ♪ ♪ ♪ ♪

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kristen: the san francisco mayor wants downtown to be a fun place for people returning after two years from working at home. a new initiative is a weeklong series of events aimed at bringing life back to the city.

>> no one likes to have a good time more than san francisco. no one takes fun more seriously than san franciscans. so part of the fund means that when we come back, we get to see some amazing activities. kristen: bloom sf is a partnership with the city, local businesses, and transportation leaders. joining us to talk about it is insider phil matier. selling san francisco, and that's what she is kicking off this week. kristen: under which she is doing this. what is the state of the city with regard to office workers, two years since the pandemic began? phil: well, it's not that good. we have to be honest about it.

unlike a lot of other cities, we heavily rely on tech workers, people who can basically work off a laptop. the best case scenario is even if we get the office workers back, they'll probably be tuesday, wednesday, and thursday, and we will probably see some sort of blend on monday and friday. the mayor wants to make the city look inviting on those days, to make people want to come back. we have to look at the tourism numbers. domestic flights art about 70% of what they were pre-covid, but international flights are only about 40%, which means our tourism and business market is really still depressed. hotels are still less than half full and that's why the mayor is taking a sales trip through europe to try to sell san francisco to the europeans. why europe? because they are the most open right now post-covid, and they have the most money.

asian markets are still battening down the hatches and so they're going to try to get the next wave of tourist from europe. it is going to be tough because las vegas, orlando, new york, other cities came out earlier, they unmasked earlier and were much more welcoming and they've got a head start on san francisco. kristen: whether it's office workers are true is, let's talk about once or critical that they come back in large numbers. there are so many industries and infrastructures that depend on them, right? phil: if you just turn around wherever you are in the bay area, you see some impact on it. it may not necessarily be on your street but the person on your street is doing business with someone in san francisco, whether it's caterers, office supplies, you name it come across the board. napa, sonoma, all that that that industry is depending on people stopping in on san francisco first. a lot of it is interfaced with

san francisco. transit, bart ridership continues to be down. caltrain, ridership continues to be down. golden gate bridge. if it is down, they will come to us to try to make up for the money they're losing. the faster san francisco can get that, the faster everybody else can get back to sort of a normal state. that could take time, though because things are getting slower. the good news is, you might be able to get a seat on bart. the bad news is, i'm not going to guarantee what the price will be in six months if we don't get people back in big numbers kristen:. what are the main carrots they are dangling in front of you to get people to come back on those days? are they enough, do they hit the mark? will it be enough to convince you to return to the commute, even now with gas prices, to come back to your cubicle? phil: is it something the mayor

can do? is it something the downtown chamber and her constituents want her to do? yes. politics is sometimes public relations. is an acrobat and union square going to bring office workers back? no, but it could bring it -- bring attention to the fact that san francisco is open again. we made history by having such low covid fatalities, by being in such a lockdown mode. now it has come back in some ways to haunt us. the virtue of that is now that most people think we are shut down. in acrobat or comic or something like that is not going to bring the office workers back. she's also working with businesses to try to get them to bring it back, but we have to come to the realization it's a new post-covid day, and things are going to be the same. kristen: i don't want t't want't into crime because that is a factor as well.

the mayor stood with business leaders today, couple of weeks before she notes her welcome back to sf pledge where executives from some of the biggest companies were all there. they? are aligned, aren't they? it seems like they are aligned in bringing people back. phil: they are, at the big question is, what is their definition of bringing back versus the mayor? the mayor would like everyone back here five days a week. i'm not sure everyone wants to be back five days a week because of traffic was a nightmare. but they will get three and then possibly two. it's going to be a blend. hoover and lift our bringing people back. but the city they come back to cannot be the same one it was before. as you mentioned, the crime, the

mentally ill, the homelessness on the streets. if people don't like what they see, and acrobat in union square isn't going to change that perception. the first part of welcoming isos safe. and that's also with bart as well. peoplepeoplepeoplepeoplepeoplepe the post-covid world has got to be safe, better than before, because it was in trouble before. kristen: how is convention business right now, is that coming back at all? phil: it is still slow. it's not just because of the covid shut down. we had a situation where san francisco just became so expensive. las vegas and orlando in these other convention sites, san diego, los angeles, were cheaper. they took advantage of being open and getting business back. they built up, arizona built up.

we lagged behind, and now it is proving to be expensive. so we've got to figure out some way, there are some backroom deals going on to try to lower the cost of conventions. we like to pay well and have benefits for our workers, and that costs money. kristen: phil matier with his take on bloom sf. we will see you again at 4:00. coming up next, sleep disrupted. just sprung forward into daylight saving time, and we are talking with the sleep expert about how to cope and why many

kristen: this past week and, most americans set their clocks forward by one hour and got one less hour of sleep. we do this every year, fall back in the fall, spring forward in the spring. more and more doctors are now saying we should put an end to this policy because it is outdated and wreaks havoc on our bodies. but for now we have to live with it. joining us with tips on how to

cope is a sleep medicine specialist at ucsf and a spokesperson for the american academy of sleep medicine. explain the science of why of us are extra tired today. >> just to move earlier is so hard because our biological clocks don't want to listen necessarily just because it is a clock change. the other has to do with how much sunlight we actually get during the day. just because we try to go to sleep an hour earlier doesn't mean we can necessarily fall asleep an hour earlier. that's why we want to gradually shift over time to go to bed 15 or 20 minutes at a time. then we get up 15 or 20 minutes earlier. if we have a few days, that will be great. if not, at least get up the next

morning, get lots of sunlight, go for a walk to train the biological clock so that her eating and sleeping habits can be more normalized. kristen: it sounds like you are saying we should have a started a week ago like adjusting 10 or 15 minutes each day. >> ideally, sure. the internal clock can be nudged a little, but to make that one hour leap is almost impossible to do on the spur of the moment. kristen: i am not disciplined enough. i felt like i slept in a little bit, but i'm still tied. i wonder if our bodies naturally have an easier time of filing back in november. which one is harder? >> for most people, they can stay up a little bit longer because the internal clock tends to be a little longer than the 24 hour day. most often we are all i about

5-15 minutes. as always, it's easier to stay up longer than it is to force ourselves to go to sleep earlier. kristen: which countries and continents do the switching of time, and why did it all begin? >> the time change in theory originated to save energy during world war i. germany started the concept and then we quickly adapted the same principle. what we saw was that we really didn't save all that much energy, so it became unpopular and reverted back to standard time. there was another where there was a lack of energy being distributive, so we tried it again, and begin -- again it became unpopular. now we do it basically march through november. the issue is when we had it in

the past, before 2007, it started in april. it's more aligned with the axis of the earth in that we have the number of hours of sunlight available more consistent with that schedule. since we moved to march and november, it's less consistent because we cannot make the sun rise any earlier than it does. so we actually have more hours darker in the morning. we may get a little sunlight in the afternoon, which some people prefer, but in general we don't like getting up so much earlier than we should. kristen: overall when you balance things out, is it better from a health perspective to do this in march? i would think that now, maybe being able to run after work because they're still daylight, and the kids able to finish their soccer or baseball practice, all and all that is positive, isn't it, compared to one day or week of being a little more fatigued? >> there are definitely

consequences and advantages. because we cannot make ourselves go to sleep earlier, it actually increases the number of accidents that one can encounter like fatal car accidents. that definitely increases in springtime when we lose an hour of sleep, and the number of medical errors also go up. notes by hand might make more errors.

joining us on this interactive show, getting answers today. we will be here every weekday at

3:00 on air and on livestream, answering your questions. world news tonight is coming up next and we will be back at 4:00. tonight, several developing headlines as we come on the air. the russian forces targeting the heart of kyiv. the heaviest bombardment of the capital yet. the russian military relying on massive air and missile attacks on civilian targets. surveillance video showing an parent building severely damaged during a deadly strike today. a rocket intercepted and crashing into the street in kyiv today, killing one person on the ground. and tonight here, the haunting images from mariupol coming in. bombings bombed out and smoldering. and the heartbreaking news tonight about the pregnant woman and her baby rescued after the bombing of that maternity hospital in mariupol. they did not survive. also tonight, what we're learning after russian missiles hit that military base just ten miles from the polish border, killing dozens and wounding