doreen gentzler just sat down with nih director dr. anthony fauci and will join us the next half hour. >>> this isn't fiction, it's a secret weapon that helped police in northern virginia bring a missing girl home. the whole thing caught on camera. >> the storm team 4 by 4 is out on the roads right now in some of the hardest-hit areas from today's snowfall. now the focus shifts from the snow falling to icy spots waiting for you when you leave your house tomorrow. >>> there's a little bit of rain and a few flakes left flying across the area. the last of it heading through areas of fairfax and d.c. earlier today we were able to measure a little bit of the snow up to the north. 3.5 inches in gaithersburg. 2.8 around frederick and winchester picking up two. that before the melting, while we have low impacts on area roads, we'll have more moderate impacts as we get into the overnight. it all has to do with the refreezing. temperatures below freezing. at 6:00 p.m. we stay in the pocket below freezing. not just until 6:00 a.m. 27 degrees insi

news4's doreen gentzler sat down for a one-on-one with dr. anthony fauci. she shares new details about when a vaccine could be available for the first time. >>> and there's a new plan of attack on the heroin epidemic in virginia. >>> the temperatures aren't bad out there right now. this weekend as we've heard from doug and vj is going to be bitter cold and some of you could still be dealing with ice in the morning. more weather alert coverage throughout this hour. >>> a warning tonight to drug dealers in virginia. the feds are pouring resources into investigating and prosecuting heroin cases. they're focusing on those whose customers end up overdosing and dying. >> our message is more important than just one criminal prosecution. our message concerns the hundreds of deaths from heroin overdoses across the state of virginia. and the thousands across the united states. >> that tough talk came at a news conference today announcing the guilty plea of virginia beach man who sold heroin to a 23-year-old woman who ultimately died from it. the charge carry as minim

the need for more organ donors is tremendous. >> doreen gentzler is here with the story of a high-profileant patient who is sharing his story for the first time. >> jim, wendy, judge lee satterfield is the chief judge, the boss of everything that happens at d.c. superior court. 21 years he's been on the bench. he oversees more than 100 judges and magistrates. his colleagues just recently found out why their leader disappeared for a while. judge satterfield had a heart transplant. you came pretty close to not making it, didn't you? >> they said -- they tell you things afterwards that they won't tell you before. i remember my medical people saying you got it in the nick of time. >> reporter: it is a stranger's heart that now pumps in judge satterfield's chest. he's just recently come back to while back, and this wasn't his first brush with death. >> only symptom i had at the time was a severe headache, at least that's what i thought. >> he had weakness on the left side of his body. he had inability to see on the left side. his speech was slurred. >> reporter: almost three years judge satter

still ahead, doreen gentzler will join us to talk about what's being done here and abroad to try and combat this rise of infections. >>> right now crews are trying to figure out what's behind the sheen that popped up this week along the potomac river. investigators tell us they've identified a petroleum-based substance in an area around grably point. there have been sightings of the sheen stretching from the district to nearly eight miles south of alexandria. the coast guard and others have been checking waterfront locations but so far haven't found any potential source. >>> former d.c. mayor vincent gray did what was expected today. announcing he will try to revive his political career with a run for the d.c. council. news4's tom sherwood reporting. >>. >> reporter: on wamu road today may gror gray ended months of speculation about his political plans. >> kojo, i made a decision i am going to run for the ward 7 seat. >> reporter: the democratic primary is june 14th. gray will file official papers in the next few day approximates. >> i'm glad you're back in politics. >> reporter: he'

. >> i'm doreen gentzler. the ice is what is causing all the problems right now. it got so bad tonight that metrobuss stopped running an hour ago, the conditions too slick, and most riders staying home. we expect it will warm up overnight. but some school districts are taking no chances. schools in alexandria, fairfax county, falls church, and nanne manassas church are all on two hour delay. >> closed fauquier county, fredericksburg, loudoun and prince william county and stafford and spotsylvania also closed. southern maryland got hit the hardest. so calvert, mary's county schools will all be closed tomorrow. >> we've got team coverage of the dangerous conditions out there tonight, and what to expect tomorrow morning. we start with storm team 4 chief meteorologist doug kammerer. >> we're still dealing with the freezing rain across the area right now. we're going to continue to see that for the next couple of hours. temperatures are still below freezing at this hour. take a look at the radar right now. you can see the areas that we're watching back towards frederic

just like he told news4's doreen gentzler, he said researchers are already working on a vacc e vaccine. >> all we've done already is to take that same plas mid, pull out the west nile gene, stick in the zika gene, and now you have the beginning of a zika vaccine. so it really is a testimony to having the experience of continued years of support in trying to >> health leaders also told congress they don't believe the virus will become widespread in this country but they said steps are being take ton reduce transmission. >>> well, the days of standing on a street corner to hail a cab may be over. the d.c. taxicab commission just announced a new app, and it's going to be available for iphones and androids as well. the app comes after years of government reforms aimed at modernizing the district's cab industry. some of the recent changes include upgrading d.c. cabs so they can accept credit cards and changing the colors to a more uniform red and gray. >>> well, i don't have to remind you romantic debonair guys out there that it's valentine's day this weekend. look, it's going to be one to

doreen gentzler has been tracking this story. >> there is a lot happening on the zika virus story just about every day. there were at least two meetings today on zika, one with the heads of the centers for disease control and the national institutes for health. some of the news that came out of those meetings, the risk associated with the birth defect microcephaly in puerto rico is becoming a huge focus for the researchers now as they try to confirm that link between those two and identify when expectant mothers are at risk. zika is now affecting blood donations in this country. the food and drug administration came out with recommendations that blood donors returning from travel wait at least 28 days before donating blood, and that means travel to the caribbean, south central america are some of the areas affected. we understand that phase one being developed by the national institutes of health are expected to start at the end of this summer to early fall of this year. and the cdc now has 500 people on their staff focusing exclusively on the zika virus, learning more about it and how

. >> and i'm doreen gentzler. hillary clinton and donald trump both visited virginia today. >> but we begin this evening with steve handelsman who is in texas, the only super tuesday state where anyone other than trump is now leading in the republican polls. hi, steve. >> reporter: that's exactly right, wendy. it's ted cruz, and this state tomorrow is make or break for the texas senator's campaign. he's as much as admitted that with appearances here in houston, dallas, san antonio. he's not going around all these super tuesday states. he's right here at home where a cowboy, a real cowboy i talked to today at the houston rodeo said cruz is popular but that cowboy said a lot of folks in the state are also seeing a serious move by donald trump. ted cruz in texas, the only super tuesday state cruz figures he can win and must win. cruz vows to take texas tomorrow and then catch fire. >> at that point it will become abundantly clear this is a two-man race. >> reporter: at the houston rodeo today, the cowboys are divided

. >> and i'm doreen gentzler.illary clinton and donald trump both visited virginia today. >> but we begin this evening with steve handelsman who is in texas, the only super tuesday state where anyone other than trump is now leading in the republican polls. hi, steve. >> reporter: that's exactly right, wendy. it's ted cruz, and this state tomorrow is make or break for the texas senator's campaign. he's as much as admitted that with appearances here in houston, dallas, san antonio. he's not going around all these super tuesday states. he's right here at home where a cowboy, a real cowboy i talked to today at the houston rodeo said cruz is popular but that cowboy said a lot of folks in the state are also seeing a serious move by donald trump. ted cruz