than 40,000 people, people are going to get sick independent of the vaccine or the practice scene seenoright now, interesting that they haven't had to pause this trial as opposed to two other companies. things are ok that are not ascribed to the vaccine. >> ok. alicia wants to know why make a vaccine but not one for hiv-aids. there's a lot to unpack but we have good therapeutics for hiv-aids. >> it's much more challenging to do an hiv advantage seerngs because it's -- it changes all the time. and it's harder to really -- for a variety of reasons that we can't get into now. versus the covid virus itself, even though it causes so much destruction is relatively simple virus to get hold of from a vaccine manufacturing perspecti perspective. >> how long is this vaccine effective? are people able to get it the second time. >> that's a good question. right now the feeling is it's probably going to be a periodic vaccine, you'll need a booster. the question is how long immunity would last. 40,000 people and more will get the vaccine who are in these trials before the rest of the population. they

a large percent of these people are getting the ma seeno. the vaccine is protecting them. we could see the first needles going into arms later this year. >> all right. in about six weeks, we hope. why can people begin getting the first vaccines? i'm not -- well, why doesn't make sense. it's who do we think will be in line first? >> what the early estimates and what makes the most sense are the people at the highest risk of contracting covid. the people who we need, so that's essential workers, people not only on the health care front line but those keeping our lives running. those are the ones. there are high risk individuals of vulnerable populations and the trickle down effect. we're not necessarily going to have a widespread protective vaccine available for everyone until possibly late summer or even after that. i think there's a special worry or note about children and when they'll be able to get the vaccine. >> i know. some people say children should get them earlier so they can go back to school. moderna disclosed today that it faces huge challenges for the roll out.

we get a look at all the rain covering marin and sonoma counties, moving toward lake and mend seeno countiesthrough tomorrow, marcus. >> thanks, kari. >>> we'll have another local news and weather update for you coming up in an hour. i'm looking at your mri. your shoulder seems to be healing nicely. i'm sorry baby... i don't want you to play with that... (singing) twinkle, twinkle little star. how i wonder what you are... how are you doing? schedule a video visit with your doctor. kaiser permanente. thrive. but you can work out anything wowith comcast business.w. get fast, reliable, and secure internet on the nation's largest gig speed network. flexible tools - like wi-fi you control. voice solutions that connect you from anywhere. and expert advice here, here, or even here. be fast. be flexible. bounce forward with comcast business. get started with a powerful internet and voice solution for just $64.90 a month. plus, for a limited time, ask how to get a $500 prepaid card when you upgrade. switch today. there's no bad time to start at amazon... ♪ i like the flexibility. it also allows for p