that's where the mosquitos get down to business. we know mosquitos drink blood, there?> we put the blood on top of the cage like so, and then we have a heating element which goes on top of the feeding plate and that heats the blood producing the heat like body heat and that's what attracts the mosquito to the blood and then they feed by penetrating the film >>> three days later they will lay genetically modified egg. >> we fake the paper like this and we brush it through a sieve and it is as simple as that >>> they're so small >> we actually have 40 million eggs >>> 40 million? >> 40 million eggs >>> my gosh. those genetically modified eggs can be shipped around the world, hatched, raised and released. the insect comes with something else, a marker that can help identify the g m mosquitos from the rest of the population. so when you look at this, you're seeing six mosquito pupae and three of them are the company ones and the others are not. the only way you can tell is by changing the light. now, all of a sudden three of them disappear and only three are actually remain

for me, i would create a war on mosquitos.think the question that you asked before the break, you know, should we really be focusing on the mosquito vector? is the classic way to do public health, and i would really support that, because you get dividends, not just zika, but all of these other mosquito-born illnesseses. >> doctor every animal exists in a web of relationships, and as appealing as it is to think about a world without mosquitos, i was traveling in tanzania, and talk to villagers who just assume malaria, and the suffering and death that comes from it, is a part of their lives. what would be involved in setting a course, setting a goal towards killing mosquito wherever we find them? >> i think that's a very good goal, and i would be all for it. because my standard is human life is the standard. and these mosquitos with the diseases, the list goes on and on and on, have plagued the human species basically since inception. what i think this would involve is an all-out war the way this malaria ratification went in the

there are working to reduce mosquito populations. they are trying new forms of mosquito control. they point out the season of the olympics is a cooler season, so generally it has less mosquito activities, though not known. our advice would essentially be the same, and from the very first days when we had strong evidence suggesting a link between the presence of zika virus and microcephaly, we have advised pregnant women not to go to a place with that setting. in four people who live in those places to prevent mosquito bites. wear long-sleeved shirts and pants, using clothing that has treatment that repels mosquitoes, and a possibly staying indoors with air-conditioning and a screen with enclosed spaces. as we learn more in the coming weeks and months am a more will be understood to learn how we can keep risk to an absolute minimum. >> so, i was in peru and there was a mosquito research project going on, tracking individuals going on who may have been contacted with mosquitoes in that area. a lot of folks in my district are concerned about children coming north from latin america.

daytime, inside mosquitoes.country and in my district, we do not have as much fresh water sitting around like you would find in the caribbean or the -- or brazil. if we do a good job making sure we don't have a lot of pooling water around, is that ok? director frieden: it will depend on the local environment. >> how about southwest florida? we need toieden: look at mosquito populations, trap them, and analyze them. your point is quite correct that the outdoor spraying may have limited impact, if any on the mosquito population. but we are looking at different ways of doing mosquito control, and in some circumstances, what they had done in australia, you target indoor residual spraying for this particular mosquito with effective results. all of that is quite complex to do. let me make sure i understand this correctly. involved get legislatively, so i'm not just taking your time here. in my house, i have air conditioning. if i see a mosquito inside, i ika,to myself, it is not z so if i get bit i do not have to worr

only female mosquitos bite people.es were ol teared so their offspring will die before they can bite anyone. after they reach maturity they're sprayed out the window of a van. they mate with the females in the community and the offsing die, offspring day, reducing the spread of the disease. 25 million mosquitos have been released. the number of mosquitos that can spread disease has gone way down. they said they're all male and male mosquitos don't bite. i hope that's the case because there's 245,000 of them. the long-term impact of this experiment isn't yet known. these mosquitos are not approved for use in the u.s. and critics worry that messing with genetics may not be safe. microchaly isn't the only concern when it comes to zika virus. a debilitating form of paralysis has been on the rise in places with zika. the big question, though, is whether zika is the cause. to answer this, dr. ashley sachinsky, first-year detective with cdc, took us with her as she conducted an investigation in partnership with the brazilian

mosquito control is hard. track mosquitoes, figure out where they are. reduce breeding sites. make homes mosquito-proof, or mosquito-resistant homes through air-conditioning, screens, and screens that have insecticide in them. this is a tough area. but there's no quick fix. there's no easy answer. fighting zika is going to be hard. it's going to take time and it's going to mean investing. investing in mosquito control, investing in public health systems. investing in our ways of diagnosing and stopping disease. treatment is another area people are looking at. but since four out of five people with zika don't have symptoms, and they are mild. it's hard to think of treatment having a major influence. but a vaccine would be important. improving the diagnosis is important. and mosquito control would help us control zika and other deadly diseases. >> doctor, you mentioned a potential link between zika and a serious paralysis. what is the research right now? what do we know about the potential link between these and the threat to the people who are not pregnant? guest: we know that

daytime, inside mosquitoes.country and in my district, we do not have as much fresh water sitting around like you would find in the caribbean or the -- or brazil. if we do a good job making sure we don't have a lot of pooling water around, is that ok? director frieden: it will depend on the local environment. >> how about southwest florida? we need toieden: look at mosquito populations, trap them, and analyze them. your point is quite correct that the outdoor spraying may have limited impact, if any on the mosquito population. but we are looking at different ways of doing mosquito control, and in some circumstances, what they had done in australia, you target indoor residual spraying for this particular mosquito with effective results. all of that is quite complex to do. let me make sure i understand this correctly. involved get legislatively, so i'm not just taking your time here. in my house, i have air conditioning. if i see a mosquito inside, i ika,to myself, it is not z so if i get bit i do not have to worr

the mosquito loves here. the mosquito loves florida. but these guys help keep them under control in numbers so they are not enough of them to lead to epidemics. >> okay. >> okay. >> so what we're trying to tell our residents is they need to get out of the house, walk around and try to eliminate every single accumulation of water around the house. no matter the size. small accumulation of water -- >> standing water. container. this is also domestic mosquito or container mosquito because, you know, lives in those conditions. we tend to keep buckets, kiddie pools, bird baths around the home and with the rain esdecially now, this is we're getting a lot of rain. so we are getting all the containers full of water and mosquito will colonize those habitats. we don't have a very harsh winter. we have a very mild winter. there is no limit for mosquitos in that situation. that's what we're trying to tell the people here. >> the residents of people who -- what about the county? what is the county doing? >> we're responding to every time that health

they get hit by mosquito. >> what they say about that as you stop the mosquito. we had west nile. have west now right here in d.c. >> it's mosquito control. >> exactly and that's what the people in florida -- >> that's mostly a state and local issue. i don't know if we are helping as local entities or if they can use their funds, we have cdc funds. >> we have community block. >> quite a bit of the emergency request is to be able to support state and local mosquito control. mosquito control is very patchy right now. >> in florida we are damn good at it. >> we have had mosquitoes in most of the golf course region, i've worked in louisiana and they are pretty good at it. again there are places that are not as good as it and the reaction that florida has taken is that florida set a model for the united states, but what we want to do is make certain we are covering the rest. it sounds like we are ready have a little damage in puerto rico, the virgin virgin islands and some of the caribbean regions. >> yes the lids of living conditions and climate in puerto rico and the caribbean are su

the number of mosquitos that can down. they said they're all male and male mosquitos don't bite. i hope that's the case because there's 245,000 of them. the long-term impact of this experiment isn't yet known. these mosquitos are not approved for use in the u.s. and critics worry that messing with genetics may not be safe. microcephaly isn't the only concern when it comes to zika virus. a debilitating form of paralysis has been on the rise in places with zika. the big question, though, is whether zika is the cause. to answer this, dr. ashley sachinsky, first-year detective with cdc, took us with her as she conducted an investigation in partnership with the brazilian health ministry. her team gathers data and blood samples. looking for a possible link between the zika virus and this rare and devastating condition. what's it like to do what you're doing? >> well, it's -- humbling. because of the significance of the public health problem. but it's also sort of exciting and figure it out in realtime. >> reporter: the summer olympics now just six months away, and so many questions rem

mosquitos to breed. he's putting a chemical, a larvicide on top which will kill those and hopefully will last and protect this water until the next time he comes. like everyone in brazil these days we apply mosquito repellent constantly. but the virus is on the move. more than 50 cases so far reported in the u.s. all travel related. lizzy morales, a houston mother, contracted zika on a christmas visit to el salvador. >> you could see bumps in my lips. my eyes. my ears. you have no strength, no energy. like to do anything. not to even sit down. all you want to do is lay down and sleep. >> reporter: she wasn't pregnant. her symptoms subsided. since the virus is believed to leave your blood when you recover any future pregnancies should be fine. today florida governor rick scott declared a public health emergency in four counties where people have been diagnosed with zika. red cross is telling donors to hold off giving for 28 days if they've been somewhere that has zika transmission. yesterday the first con

mostly mosquitos. >> is it mosquitos to humans. is it also humans to mosquitos? answer when we come back. >> that's a great point. >> it came up at the republican debate last night. did you see this. >> fear of spread of the zika virus, and with the rio olympics just months away, is there a skain scenario where you would quarantine people travel, back from brazil into the united states? >> you bet i would. and the fact of the was i took strong symptoms -- remember what happened with that nurse, she was showing symptoms and coming back from a place where the ebola virus was active. >> you heard chris christie saying he would quarantine those traveling back from countries with zika virus. is that a good idea. when we come back. starts with minor arthritis pain and a choice. take tylenol or take aleve, the #1 recommended pain reliever by orthopedic doctors. just two aleve can keep pain away all day. back to the news. imagine if the things you bought every day... ...earned you miles to get to the places you really want to go. with the united mileageplus explorer card

they're working to reduce mosquito populations. they're trying new forms of mosquito control. they point out that the season of the olympics is a cooler season so generally has less mosquito activity, though, not none. but i think from our standpoint at cdc our role is to give travel advice to people, regardless of why they're traveling. whether someone is traveling for the olympics or any other reason our advice would essentially be the same. and from the very first days when we had strong evidence suggesting a link between the presence of zika virus and microcephaly, we've advised that pregnant women strongly consider not going to a place that has zika spreading, so that is our advice from cdc and that for women who live in such areas or people who go there, to take really good steps to prevent mosquito bites. and things you can do applying deet multiple times a day, mosquito repellant, wearing long sleeved shirts and long pants. using clothing that has treatment so that it repels mosquitos. and to the extent possible staying indoors within air-conditioning and screen -- or

certain other types of mosquitoes. thefauci, you touched on importance of developing a vaccine. -- you arecurious pretty optimistic we could develop something fairly quickly. let explain it so that it is clear. in general, the axes anywhere from three to eight years to get all the i's dotted the -- and the t's crossed. we already have the construct you need, the candidate vaccine platform. so if you look at the timetable, you always know that in that's analogy, you have to know things can slip. we could start a phase one trial in august. they usually take three to four months, which means we could be finished by the end of 2016. now the critical issue is if it is safe and immunogenic. if the outbreak is still raging, then you can go into an accelerated phase. you could likely determine if it is effective within six to eight months, and if it is, you could get an accelerated approval from the regulatory bodies. however, if only get two 2017 all the cases go down, it is what we faced with ebola. we had an ebola vaccine t

it's in their blood and a mosquito bites them, then we infect the mosquito population right here. >> that certainly can happen and -- >> i'm not a scientist. >> no. well, certainly that's the way it is spread now in the areas where there is local transmission, in south america and the caribbean. we have those mosquitos in the united states, particularly a region in the southeastern part along the gulf coast. one of the things that we're preparing for, we have, as you heard from dr. schuchat and others, a considerable number of imported cases that got infected elsewhere and come home. we're going to see more of those. what would not be surprising is at some time in the future, we will see local transmission, where just what you're saying happens. where someone comes back, they get bit by a mosquito -- >> the way you stop that, you stop the mosquito. like we've gone after west nile. we had west nile right here. >> right, mosquito control. and that's what the people have started. >> that's mostly a state and local issue. i don't know if we are helping any of the local entities, if they

they're working to reduce mosquito populations. they're trying new forms of mosquito control. they point out that the season of the olympics is a cooler season. so generally has less mosquito activities, though not none. but i think from our standpoint, at cdc, our role is to give travel advice to people. regardless of why they're traveling. so whether it's someone is traveling for the olympics or any other reason, our advice would essentially be the same. and from the very first days when we had strong evidence suggesting a link between the presence of zika virus and microcephaly, we've

we will improve clinical diagnosis and record mosquito surveillance, including resistance of mosquitoes to insecticides in to understand microcephaly more. within the last hours, the cdc has released information from brazil about the findings among miscarriages two and two infants who had microcephaly and died within the first 24 hours. in working with our brazilian colleagues, we were able to material of genetic the zika virus in the brain tissue of the two infants who died with microcephaly. this is the strongest evidence to date that zika is the cause of microcephaly, but we still need to understand the clinical and epidemic logical patterns to make that link defended it. -- definitive. to do these investigations and do these well, we will need additional resources. are a series of measures we can take, particularly in the u.s. area of puerto rico and other parts that have had the virus transmission, and we look forward to working with you to inform people about the latest information on zika and what we can do to stop it. thank you very much. >> thank you for your testimony. dr. fau

and they research mosquitoes specifically because there are like 40 different kind of mosquitoes in this small area. >> 40 variety is of mosquitoes all of which may be carrying different kind of illnesses. >> right. >> i didn't know even know there were that many kind of mosquitoes. talk about this one being very aggressive. >> very aggressive. we have these all over the united states, they are aggressive, they -- even when you look at them they are more robust that is the average mosquito. they have describes, sometimes they are called the tiger mosquito. they can particularly problematic because as they have evolved, they have learn today do things like breed without much water. even when you give people these instructions of, you know, get rid of standing water it doesn't take very much for this particular type of mosquito breed. mcgregor skinner told us as little as a tiny vase of flowers is enough. but it brought up something really interesting. he said there is this whole program in place that they have been working on for years to -- it's an insect sterility program, so they infec