dr. richard besser joining janeiro. >> i think it's a responsible move. this is not a widespread outbreak across miami. it's limited to one area. but it says we have the conditions in many part of from local mosquitoes. and people have to understand that this can occur. >> for those in miami and everyone concerned, how can we protect ourselves? >> the big focus is on protecting pregnant women. use a repellant for three weeks. if you live there, get rid of free-standing water, and repair those >>> we move on to the race for the white house. tonight, the general election is officially under way. hillary clinton versus donald trump. one of them will be the next president of the united states. and last night, the democratic convention finished big, with fireworks and balloons. today, wasting no time, clinton and her running mate are hitting the road. kicked off the official first day of the general election on a bus tour of battleground states, launching fresh attacks against donald trump. >> i find it highly amusing that donald trump talks about make america

dr. richard besser from brazil, the center of the outbreak. tonight you heard it, england saying pregnant women should not travel to florida but the cdc not issuing the same warning. is that a mistake? >> i have to say if these cases or latin america they would issue that advisory but what they're saying is four cases that occurred in early july and no transmission since then, but i have to say if you're a pregnant woman and can avoid that part of miami, that's not a bad idea and if you're pregnant and live there, you want to make sure you're using repellant all the time. >> we want to turn to san diego. investigators have examined body camera footage from the shooting of two police officers, 52 gerald jessi killing officer jonathan da guzman thursday night and his partner wade irwin was wounded. detectives still cannot determine if the attack was planned. another man described as a potential suspect is also in custody. >>> turning to the severe summer weather across parts of the country. in tucson, arizona, strong hail storms hammering away a

dr. richard besser is here. should women be careful of traveling to south florida? >> what we know been transmitted in one neighborhood around miami. if you're pregnant, or trying to become pregnant, you may want to avoid that area. but the rest of florida is like 30 states where the risk of mosquitoes that could transmit this disease exists. so, use repellant, but follow travel warnings. tom is this? more than 1 million people. celebrating mass in krakow, the culmination of his five-day trip to poland. urging young people to take risks but stay positive. and also condemning recent terrorist attacks around the world. >>> back home tonight, and a heart-stopping car wreck in florida. incredibly, the driver survived, and has witnesses to thank. here's adrienne bankert. >> reporter: this heart-stopping crash came out the car flipping over nearly a dozen times. police examining this video to determine why the driver lost control. good samaritans come to the rescue, flipping the car right side up, and pulling the man through a window. luckily, no one else was hit. the dri

dr. richard besser. so tell us more about her picture. it'll help explain. cartilage that sits above your cokal cords and prevents food or anything getting down into your larynx and windpipe. with epiglottitis, that tissue gets infected or swollen and the reason it's so dangerous, if that swells up it can totally block off your windpipe and cut off all air and be fatal. >> what causes it? >> it can be caused by infection, bacteria or viruses or by direct damage to the tissue from burns, from chemicals or hot liquids, choking on a foreign body and from smoking drugs like crack where it causes swelling to the tissues. >> what should you look out for? >> it's the worst sore throat of your life. the symptoms are similar in adults and children. very great difficulty, pain in the front of your neck, difficulty swallowing, fever, you can have a muffled voice and drooling. you can't swallow to the point your so kriegs come out. you could be drooling. >> you have treated children with this? resident this was one of the thing that scared us the most. you would see a c

dr. richard besser. so tell us more about her condition. >> yeah, so take a look at this picture.mall piece of cartilage that sits above your vocal cords and prevents any food or anything getting down into your larynx and windpipe. with epiglottitis, that tissue gets infected or swollen, and the reason it's so dangerous is if that swells up, it can totally block off your windpipe and cut off all air and be fatal. >> what causes it? >> well, there are a number of things. it can be caused by infections, bacteria or viruses or it can also be caused by direct damage to the tiss, f chemica or in aigbo there'srepr swelling to the tis >> what sho lok >> it's the worst sore thro your life. the symptoms are similar in adults and children very great difficulty, pain in the front of your difficulty swallowing, fever you can have a mufo you can't swallow to the point that your secretions come out. you could be drooling. ha resident, this was one things that scared us the most. you would see a child ce in they looked scared and could have this. thankfully now we vaccinations against something

dr. richard besser, abc's chief health and medical editor, believes pregnant women should take health precautions traveling to miami. >> if you are avoid those parts of miami until it's sorted out, that's not a bad idea. >> reporter: the cdc says intense mosquito control are ongoing and adds, if we see evidence of transmission recommendations. literally a day by day-to-day decision. still, expecting their second child any day now, they would not take the chance traveling to florida. >> i will not travel being pregnant and taking the risk. it's not worth it. just wait nine months and then we will travel. >> it worries me. >> reporter: samantha and tony still plan on traveling. >> i will still go. i am actually going at the end of the month. >> i wouldn't want it to hinder what i want to do. >> reporter: you take the precaution? >> absolutely. a lot of bug spray. >> reporter: health officials control any spread. reporting from union square, tim fleischer, channel 7 eyewitness news. >>> still no researchers in the fatal shooting of a -- still no arrest of a fatal shooting after father in brooklyn. a

dr. richard besser. what more could they have going on here?found in the water that's going to be used in some of the olympic venues. how bad is this? >> yes, exactly. finding this in the water, another sign that some of the athletes will be competing in raw sewage. it's being pumped in the water. it's not being treated so you have marathon swimmers, try athlete, rowers, canoers, sailors, when rio went -- when they bid on the games they promised that they were going to build all of these new sewage treatment plants. the economy took a turn for the worse and they didn't build them so now we have this situation. the good news if there is any these super bugs only cause problems in people who are chronically ill in the hospital with immune problems but found high levels of a lot of viruss that can cause stomach flu and i can't imagine what's going to happen if they get a stomach bug ripping through the olympic village. >> doesn't sound like a chance you want to take when you hear that. you already have zika concerns and now the nih and u.s. olympi

dr. richard besser. dr. besser, i have one question for you.this is tricky territory here because you have parents who say i don't want you to have that conversation but then you're being told to have that conversation as a doctor, does it put the doctor against the parent? >> well, you know, i hope not. pediatricians should be talking about sex in a way that's age and developmentally appropriate. one in three teens say their doctors aren't talking to them about sex at all. and when they say we should talk about sex it's not just abstinence. we know from school-based programs abstinence only education does not delay the age at which kids have sex but we have to talk about it but also contraception and sexual responsibility and gender and sexual consent. you know, when you look at what kids are learning in school, fewer than half require sex education and fewer than that require that the information is medically accurate. >> and 88% of teen pregnancies are unplanned. those are the cold facts right there. dr. besser, thanks for being with us. >>>

dr. richard besser join us now, dr. besser, both of your parents are clinical hypnotists. >> they are.it's a tool where you induce a state where a person is very open to suggestions and then you give them suggestions to overcome a problem. so, it's been used very successfully in helping adults and children overcome anxiety, helping people break bad habits like smoking and biting their nails, but it's not this you're under my control kind of thing. it's a tool that can be very effective. >> what do you think about using it to parent? >> well, you know, the evidence on the clinical use is really, really strong. i haven't seen that kind of evidence for parenting and that bothers me a little bit. there are things that we talk about all the time that work in terms of shaping behavior for parenting. catching your child doing well and doing good and praising them, i love star charts for school-age kids where you have a goal they're working towards and every time they do a good behavior they get a star and the last one is being consistent, say what you mean and follow through. parents on the s

dr. richard besser, abc's chief health and medical editor, believes women should take precautions. >> if you can avoid those parts of miami until this is sorted out, i don't think that's a bad idea. >> reporter: the cdc says intense mosquito control efforts are ongoing in south florida and adds, if, however, we see evidence of transmission, despite control recommendations. literally a day by day decision. still, expecting their second child any day now, they would not take the chance traveling to florida. >> i will not traveling taking the risk being pregnant. >> it worries me. >> reporter: samantha and tony plan on traveling. >> i wouldn't want it to hinder what i want to do. bug spray. >> reporter: health officials in florida believe they can control any spread. reporting from union square, tim fleischer, channel 7 eyewitness news. >>> a special hero pit bull will soon hopefully have the great home he deserves. the stray dog jumped all over a bad guy when a woman was getting attacked in tennessee. he was stabbed several times by the attacker and nearly died. the officers got that dog v

dr. richard besser joins us to talk about that and dr. besser, how are you doing, my friend?all right. >> now, does this go against everything we knew or thought we knew about prediabetes and what did they find? >> this is interesting so prediabetes is a situation where your blood sugar is up but it's not high enough to be called diabetes but you're at risk of eventually going on to develop diabetes. and we used to think about this in people who were just overweight. but in the new study they looked at adults that weren't overweight and over time the number with prediabetes is going up. in the late '80s it was about 10% of cuts then in 2012 it was 20% of adults. and while we want everyone to eat right and exercise, if you know you have prediabetes, you're more likely to make those changes to cut down -- >> how do you know? >> you could go to your doctor and ask for a blood test but the cdc has a simple test you can show -- that can show if you're at increased risk. everyone in the big board and you all are home give it a try. if you're a man hold up 1 finger, 0 if you're a wo

dr. richard besser is here to break it all down and dr.ts need to know about this? >> the first thing is that playing sports is a really good thick, you know, in terms of girls playing sports, improves self-he stream, strong bone, less risk-taking, less risk of obesity but the purpose of the report is to let people know that during the teen years, that's where we're building strong bone, girls in particular they build 90% of the strength in their bones during those years and if they're playing a sport and not taking in more calories than they're burning up they're at risk for something called the female athlete triad. >> if you have disordered e eating, it leads to weak bones and abnormal menstrual cycles. >> not just elite athletes either. >> that's right. >> can we narrow it down to what particular sports? >> the ones that are biggest risk those that revolver endurance, those that focus on your appearance or leanness or some kind of weight regulation so the key one, gymnastics, dance, figure skating, cheerleading, long distance running.

dr. richard besser is here with details.his is kind of encouraging news. >> yes, the cdc looked at the numbers and a number of travelers and what they estimate 500,000 people will travel to the games. but, if you look at overall travel to the region that's affected by zika, it represents less than a quarter of 1% of overall travel. so, for most countries including the u.s., it should not increase the risk. >> at the same time we have this report out of texas of a baby born with microcephaly. >> yeah, it's a sad situation. this is what we're trying to prevent. the mom had been in latin america and acquired the infection there. so far the cdc reports 320 pregnant women in the u.s. who are infected with zika. seven so far that have birth defects. people who are traveling need to take precautions because this is what we're trying to avoid. >> still a danger of spread here in the summer? >> well, it is. we have the mosquito and so they're expecting that some of the travelers will bring it in. that's why they're trying to build up

dr. richard besser and, doc, what's going on in this case? have a battle brewing, all states require vaccinations for children entering kindergarten to protect them and other kids in the classroom but there are some outs. if a child has a medical condition that makes vaccination dangerous, they don't have to get vaccinated and then, in most states, if you have a religious reason, you can get out from a religious exemption and then there are almost 20 states that have a personal belief exemption. if you don't believe in vaccines you don't need to get your child vaccinated. well, california passed a new law that says only children who have a medical condition have an out from vaccination, everyone else has to get vaccinated, so there is a group of parents suing saying this interferes with their personal beliefs and it interferes with their legal right to get their children an education supported by the state. >> rich, you're a daddy sitting by two daddies right here and you know how passionate some parents are about this subject matter, and whe

dr. richard besser joins us now from outside the cdc and, rich, it's believed that the patient in questionde of the united states so ruled out other factors so what does this mean for the spread of zika? >> well, you know, if the infection wasn't picked up by travel and if it wasn't picked up by having sex with someone who traveled, it could represent the first case of zika that was spread locally from a mosquito. this issing that local public health has been look for and we have the mosquito that can transmit it in many parts of the country. hopefully with aggressive action they'll prevent further spread. >> what are they doing about this, the florida department of health? >> well, you know, they're doing a lot more investigative work to determine whether or not it was spread by mosquitoes or some other way. i talked to on that. they're taking aggressive action and taken steps to reduce mosquitoes by spraying. they're testing more mosquitoes. they're passing out zika prevention kits with condoms and repel apartment and information sheets. hopefully those step also help reduce spread if it