let's get to ivan watson now in port-au-prince. ivan, a moment ago, in tossing to you, i was just trying to digest this number here, the official government death toll of 900 dead from this outbreak. >> reporter: that's right, and the outbreak is less than a month old here, and, tony, it only hit port-au-prince less than two weeks ago, and already the haitian government saying some 27 people killed here in port-au-prince alone. this is a nightmare scenario that aid workers have been warning about. why? take a look over my shoulder. ten months after the earthquake you have hundreds of thousands of homeless haitians living in make shift shelters like this, sprawling, tightly congested camps like this, and the fear that aid workers were warning about months ago is that a highly contagious disease could rip through these vulnerable communities, and that's what we're starting to see right now. the united nations did not anticipate that cholera could be a threat because it hasn't been in haiti for more than 50 years. you don't have the --

ivan watts t-- ivan watson in haiti. >>> outrage over invasive pat-downs, so are the rumors versus theng up. >>> are you sick of driving? what if your car could do it for you? nah. we have something else. but if you're hurt and miss work does it pay cash like aflac does? nah. or let you spend it in any way you want like for gas and groceries? nah. or help with everyday bills like aflac does? nah nah nah. [ male announcer ] there's aflac and there's everything else. visit aflac.com for an agent or quote. aflac! ♪ ♪ ♪ ♪ [ male announcer ] at&t covers 97% of all americans. rethink possible. >>> as we all know, driving can be a headache. what if we could rely on our cars to do it for us? >> reporter: they call it the thinking car. a car you can trust to stop for a passing push chair, for a ball crossing the road, even when there's nobody at the wheel. this researcher leads the team at berlin's free university. >> we use parts integrated into the body of the car for detecting other cars in the surrounding other car. >> reporter: there are cameras to recognize lane markings and traffic signs

ivan watson is on the phone. ivan, what is the situation today? >> reporter: well, parts of the city seem calmer. we are seeing peacekeepers, u.n. peacekeepers sweeping up some of the debris from the fighting over the last two days. there are still barricades in the roads and cars are not able to move freely through the streets. i'm right now at a cholera treatment center. it's a gym turned into a coholea treatment center. doctors without borders say people are bringing in urgent cases of cholera, victims who are quite sick. he systems maybe 150 people just since last night, and they're trying to treat them now. part of the problem was during the riots, people couldn't bring deathly sick cholera patients to the hospitals to get treated. >> ivan, to be clear, you are in cape haitian, the second largest city in haiti, and my understand is there is no vehicle traffic being allowed where you are right now. why is that? >> reporter: well, this explosion of anger that began on monday directed against the united nations peacekeepers, against the governme

ivan watson is in the north coast of haiti.ght. this epidemic according to the united nations is predicting that up to 200,000 people could be infected by the time it reaches its peak. this is the first month really of the outbreak. the first in 15 years to be discovered here in haiti. and it has definitely frightened significant portions of the population. we're reporting to you from the northern city and there have been three straight days of riots here, angry demonstrators attacking and in large part, many of them accused the united nations and the peace keepers of being the origin of this cholera outbreak in haiti. that is a claim that is completely denied by the united nations itself. >> i can see the u.n. vehicles rolling in, people are running. i notice video of you driving through some of the smoke and burning tires. explain what i'm seeing here. >> reporter: well, what's been taking place here is that for three days now demonstrators have barricaded the streets of haiti's second largest city and they are stopping cars

ivan watson is on the scene. what is going on? for the second straight day now, the second largest city in haiti cap haitian is out of control. yesterday, one demonstrator was killed in clashes. the only way to get into the town and we were the only plane to land is by riding through motorcycles, because the demonstrators have created barricades and burning tires and using the wreckage of vehicles to block all automobile traffic. we saw gangs of angry youths there out in the streets. they are not attacking fellow haitians, but attacking the united nations peacekeeper es when they see them here who are besieged in the various bases throughout the town. why this angry situation? well, it has been a rumor, a story that has gone throughout haiti that the cholera epidemic and the first in more than 50 years in haiti that had originated with the contingent of nepalese peacekeepers and that has been denied by the united nations, but it is a potent rumor spreading through here and that is part of why the locals are lashing out at the unit

our ivan watson reporting, haiti's northern city is under siege from angry mob with little or no policetection as haitian leaders urge calm in the wake of yesterday's deadly riots. protesters blame under peace keepers for the cholera outbreak that has kill more than a thousand people since last month. today the under mission clald the violence was politically motivated. >>> president obama has awarded the medal of honor to army staff sergeant salvatore giunta who risked his life to save members of his unit while under attack by the taliban but not all survived. sergeant giunta is the first living recipient of the medal during an ongoing conflict since 1976. and tonight on 360, britain's prince william has finally popped the question to long time girlfriend, kate middleton. the princess bride to be has been seen but never really heard publicly before. >>> welcome back to our political party. time for one final question. president obama's new children's book, of thee i sing, come out today. given that all children's books have a teachable moment and given the president's recent shellackin

these pictures sent to us by cnn's ivan watson and his crew vividly tell the story.urning barricades in the streets of the northern city of cap-haitien and the only way into town was to ride on the back of a motorcycle. the u.n. says all aid flights have been canceled. water purification and training projects have been cut back. demonstrators also looted and burned a world food program warehouse destroying 500 tons of food aid. the u.n. says at least one protester was killed by a peacekeeper acting in self-defense. many haitians blame u.n. peacekeepers from nepal for the cholera outbreak. the u.n. says all peacekeepers have been tested and all results were negative. so far cholera has killed more than 1100 people and has now spread to the neighboring dominican republic. we just had a report a short time ago that florida health officials announced a woman who recently returned to florida from haiti has been diagnosed with cholera. we'll keep you updated on this as more information becomes available. let me bring you up to speed on some of the top stories we're followi