michalak: "well good, what i like to see, nice and boring," said michalak. "that prep was fantastic, ya know im not soing to lie he might have been the perfect colon. one minute inibation and 6 minute withdrawl. nine minutes total. he's got to be a role model for all people taking prep," said dr. michalak. "zero discomfort in the procedure. i already feel good, i dont feel sick i dont feel anything. there's no reason someone shouldn't have this done," said seaman. and i get a 10 year pass until i need to be screened again. dr.jeff michalak: "no one that put it off and had a problem says oh yea i'm glad i did. everybody says i wish i would have done it sooner, and now we know that at teh age of 50 there's an increase risk of cancer," said michalak. "everyone who's had it done says it like you it wasnt that bad, so if we can get people throigh that fear, get people that the prep isnt that bad, sadation is a lot better and everything is taken care of at that time," said michalak. (nats driving away) without a clean colon, the doctor can't do his job. dr. michal

jeff michalak. tim seaman: (broll checking getting to room) once complete, it's a waiting game until the next morning. dr. michalak: "i want it to be t most boring day i have ever seen. where i come in and there's nothgin. no polyps. i come back we give good news and everybody leaves happy but that's not the reality of it unfortunately," said dr. michalak. tim seaman: the staff at dunes surgical hospital was ready and waiting. after checkin, paperwork and an i-v used to put me to sleep.... i was ready for my first colonoscopy. dr. jeff michalak: "let me know when you're ready, i'm ready. ok lets do it... tell me your birthday one mor time" m seaman: the doctor uses colon.... that's when begins. dr. jeff michalak: "almost like a slinky. spread it out and go back in so the key is getting just enough air in there on the way out to get to look at each fold," said michalak. nats "prep is good. yea. prep is great," said the doctor. tim seaman: the human colon is made up of multiple folds. dr. jeff michala

jeff michalak. tim: part two of "screen for life" is tongith at ten. jenna: the zika virus is back in headlines today the centers for disease control saying they are investigating 14 new reports of the virus in the sates, suggesting these new cases were tranitted sexually. zika's been confirmed in 23 u-s states including here in iowa. jenna: and as a response to the zika virus, lifeserve blood center is springing to action to protect their blood supply. they've announced they'll be taking ensure the safety of the local blood supply by requiring donors who have been to zika affected areas in south america to wait at least 28 days before donating blood. "our normal screening questions would rule out anyone who did happen to have zika. we need all of our donors to be healthy and so if someone came in and did have symptoms, we would catch those, they wouldn't be able to donate. if your or someone you know is interested in donating blood, you can schedule an appointment on their website or call the number on your screen.. tim: there's really no way to ease

jeff michalak. we will have much more on tim'u colonoscopy... coming up later on in the show. lukas: and now to the latest on the spread of the zika virus in the united states. the centers for disease control saying they are investigating 14 new reports of the virus in the country, suggesting these new cases were transmitted sexually. zika's been confirmed in 23 u-s states including here in iowa. lukas: and as a response to the zika virus, lifeserve blood center is springing to action to protect their blood supply. the center has announced precautionary measures to ensure the safety of the local blood supply by requiring donors who have been to zika affected areas in south america to wait at least 28 days before donating blood. "our normal screening questions would rule out anyone who did happen to have zika. donors to be healthy and so if someone came in and did have symptoms, we would catch those, they wouldn't be able to donate. if your or someone you know is interested in donating blood, you can schedule an appointment on their website or call the number on your screen.. "

tim -jenna on cam (chat) tomorrow night you will meet gastroenterologi st jeff michalak, and his staff... jenna: some sioux cityians who live on country club boulavard say they're worried about speeding in their neighborhood. so, while city leaders are working on a plan to widen that street... neighbors say that's not what they need. abc 9's bria bell has more from tonight's city council meeting. bria: was set to vote on a project to widen country from 38th street to kings highway. but residents say they'd prefer if worked on down in that area. after that went back and forth between residents and council members about the future of the country club boulavard road project, the board looked to the city's engineer's regarding tools to prevent drivers from speeding in the area. "that's where we got into the discussion of islands and the discussion of circles. turnabouts if you will. we took the public's input because we do listen to the citizens that live on country club blvd.and in the area and they were concerned about traffic calming," says moore. bria: city council decided to remove th

where you'll meet gastroenterologi st jeff michalak, and his staff. lukas: the mayor youth commission has scored a hole-in- one ... so to speak students in the program have been able to r rse 45-hundred disk golf course that's set to open at grandview park. the 9-hole course is expected to be open just intime for this summer and will be open to all players. "i think this is a good opportunity because it is a beginner disk golf course and not many high school students know about disk golf and they don't know there's a nice disk golf course at sertoma park. well with this one, we're going to try and get t there and push out. it's a beginner, anyone can do it. nine local businesses donated 500 dollars each to make the project possible. lukas: it's a white house moment that's gone viral. a washington woman, 106-years yog, dancing with the president and mrs. obama shortly after meeting them. for virginia mclaurin, it was the e ent of a lifetime... and 41 million people are watching her smile. here's abc's steve osunsami. "nats - "virginia mclaurin? hi ther