Senator rand paul dropped out of the republican race today. He is going to focus now on getting reelected to his senate seat in kentucky. Now to the democrats, after losing to Hillary Clinton in iowa, by the narrowest of margins, Bernie Sanders is beating her nearbily 2 1 in the latest poll in New Hampshire. Here is nancy cordes. Their argument is, look, you are behind. Reporter with her poll numbers sinking here, Hillary Clinton all but concede to Bernie Sanders today. Putting it off on geography. New hampshire always favors neighbors which i think is neighborly. Reporter sanders represents vermont next door. How much of your lead do you think should be attributed to neighboring state . If you did a poll about how many people in New Hampshire new Hillary Clinton, how many people knew Bernie Sanders, i suspect more would have known Hillary Clinton. Reporter he says he is with the states progressive base. 56 of democrats who voted in New Hampshires 2008 primary called themselves liberals. 36 were moderates. Sanders was asked tuesday if he thinks clinton is progressive . Some days, yes. And then i guess she is not a progressive. It was kind of a low blow. Reporter clinton took offense. But has aligned herself with both wings of the party. Heres what she said in ohio last year. I get accused of being kind of moderate and center. I plead guilty. Reporter heres what she said today. We have been fighting the results for people for years. Reporter so, what changed from then till now . Well, back in september, clinton wasnt expecting a tough challenge from the left. Today, scott she says her fight is on behalf of Childrens Health insurance, womens rights and gay rights, prove she is in progressives corner. Thank you, nancy. Late today we learned that bill cosby will be going on trial. A pennsylvania judge refused to throw out Sexual Assault charges against him. Jarika duncan at the courthouse in norristown. Jericka . Bill cosby left the courthouse ten minutes ago. The disgraced comedians attorneys had been working to get the case thrown out. Argued there was a promise by the former District Attorney to never charge cosby for allegedly sexually assaulting, andrea constand. Unsealed last summer. In it, constands attorney asked cosby, when you got the quaaludes was it in your mind you were going to use the quaaludes for young women that you wanted to have sex with . Cosby replied yes. The case again moves forward in preliminary hearing, scheduled next month. Jericka duncan with the breaking news tonight. Thank you. Today congress investigated why veterans are being denied a cure for a deadly form of hepatitis. In a cbs news investigation we told you the cure was developed by a doctor working for the department of veterans affairs. The doctor got rich, but at 1,000 a pill, the v. A. Cant afford it. Here is chip reid. If i were you, i would be outraged. Certainly the taxpayers should be outraged. Reporter much of the anger at todays hearing was directed at some one who wasnt in the room, dr. Raymond schinazi, played a leading role devil hepatitis c. When he told his company to pharmaceutical giant, gilead in 2012. He made 400 million. Did it all working 7 8 of his time for the department of veterans affairs. These are not full time. What i do with my remaining time is up to me. Reporter we first met dr. Schinazi in december. Has any bed questioned the arrangement that you have that allows you to become very wealthy while working 7 8 of your time with the government . February has never questioned yet. Reporter that changed as members including Tim Huelskamp grilled david shulkin. He just sold a company for 400 million. Did anybody know about that . I am not aware of who knew what, three, four years ago. Reporter mike coffman wanted to know why schinazi got rich but the va got nothing. Is it bureaucratic incompetence, corruption or combination of the two. This wasted resource is why this nation is unable to take care of the men and women who served the country. Others were upset the doctor the va said that he retired two days ago. The person who is responsible always seems to retire just before the investigation starts. Reporter the va did approve schinazis part time arrangement and told us part time employees are allowed to invest in private companies so long as all conflict of interest rules are followed. The va says there will be internal and external investigations. Chip reid, thank you. Well, war and poverty in syria have led to the largest refugee crisis since world war ii. More than a million refugees welcomed by germany. But Charlie Dagata found that the welcome is wearing thin. When they saw the suffering. Germans opened their arms like hopefully nothing. Mayor boris palmer was among them. We had people drowning in the mediterranean sea. I found that appalling and reporter but the mayor of the University Town of 80,000 has had a change of heart. If you have several hundred thousand men who come to your country as singles. And live in sports halls and town halls. What do you expect them to do . They have no privacy. And they have no contact to women. And how long will that happen without any outbreak of reporter for many germans the Tipping Point was new years even cologne. Police and witnesses said gangs of drunken men including many north africans and arabs groped in the crowd. Police are investigating 380 complaints. Including rape. Seattle university student, Caitlyn Duncan lost her boyfriend in the mayhem that night. Someone reached up my jacket. I was in a crowd. I was kind of twisting, turning, hitting, kicking. So, it happened all very quickly. But, yeah, people grabbed, you know between my legs, my my head, my face. Reporter she didnt get a good look at her attackers but said they were all shouting in arabic. She was rescued by a group of syrian migrants. I was just so relieved. And then they all, you know kind of hugged me. Caitlyn, it is going to be okay. You are safe now. Dont cry. Caller duncan said she came forward to show that not all migrants should be blamed. 33 arrests have been made so far. 2 3 are asylum seekers. The cologne attacks have hardened germans attitudes. And mayor palmer said germany simply cannot take as many migrant this year. The numbers have off to decline. Otherwise, there will be communities. Reporter today the German Cabinet took dramatic steps towards tightening asylum rules, scott, including a twoyear ban on family reunions and barring north african countries altogether. The welcome mat wears thin. For desperate people. Thank you, Charlie Dagata. A Smartphone App may hav Olay Regenerist renews from within. 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Im good all day. [announcer ] mucinex keeps working. Not 4, not 6, but 12 hours. Lets end this here in the city, parking is hard to find. Seems like everyone drives. And those who do should switch to geico because you could save hundreds on Car Insurance. Ah, perfect. Valet parking. Hello heres the keys. And, uh, go easy on my ride, mate. To see how much you could save on Car Insurance, go to geico. Com. Ah car alarm sounds there is a bail hearing tomorrow for one of two Virginia Tech students charged in the stabbing death of Nicole Lovell. Investigators believe the girl was lured to her death online. Heres done dahler. Reporter in her 13 years, Nicole Lovell endured life threatening illnesses. Liver transplant surgery left her scarred. Medicine caused her to gain weight says her stepmother, terri lovell. She would send me messages about the little girls picking on her, saying she was fat. She would cry. She didnt want to go to school. Reporter the seventh grader sought a better lie on line. And against her fathers wishes she created social media personas. She was able, at 13 to go and set up profiles on facebook that a minor should not be able to do that. Reporter in this invisible world online these kids are in. We have no idea. Reporter one Person Police believe she was talking to accused killer david eisenhauer, possibly on the app, kik. Kik allows users to be anonymous and send photos not saved on the phone leaving no trace. And with the National Center of exploited and mising children. Every phone, every social media site has some parental control. Whether blocking soft ware or time limits that are set. And, all of those are great. But technology doesnt solve all of the problems. Experts say parents need to take an aggressive role in knowing what their kids are doing online and who theyre talking to. Monitoring all social media every email and text. The lovells wish they could have done more. Awful. Tragedy. All could have been prevented. Reporter scott, kik said they helped the fbi in this case and all Child Predator cases. Don dahler. Well be right back. The irs suffered a major computer failure and it cant accept many taxpayer returns online. The agency says it may not have a fix for this until tomorrow. There is also news tonight about cbs. Leslie moonves elected chairman of the board. He will remain president and ceo as well. Sumner redstone who recently stepped down as executive chairman, named chairman we end tonight with a man who shares a super bowl record. One of only four men to take a snap at every super bowl game. Heres john blackstone. Reporter at super bowl 1 in 1967, the very first super bowl touchdown was captured by photographer 15 years old. John biever. I had max mcgees first touchdown. Wide shot, showing empty stand in the background. Reporter the stand were not full at the first super bowl . No. Reporter since then, biever photographed every super bowl. Gentlemen namath, super bowl three. And john madden, super bowl 11. Biever got to the first super bowl his father was photographer for the green bay packers. Photo. Vince lombardi off the field. My father to the right in the background. Had two heroes together in the same shot. Reporter by super bowl 4. Biever earned press credentials. For 30 years now, he has been with sports illustrated. This player, celebrating with confetti made the picture. Reporter his photos reveal changes in both the game and photography. This was our First Digital cover. This is the first year we didnt use film. Now, it is all auto focus equipment. That little talent of following focus of the action is gone. Reporter you liked it in the old days when, some mud went one of my favorite shots. Super bowl 22. Doug williams. Real grass. Real mud. The way the game use theed to be. Used to be. Better pictures. Because it wasnt as antiseptic as now. In spite of the changes. One thing at super bowl 50 will be exactly the same. John biever will be there with his camera. John blackstone, cbs news, San Francisco. Thats the overnight news for this thursday. For some of you the news continues. For others check back with us later for the morning news and cbs this morning. Announcer this is the cbs overnight news. Hi, everyone. Welcome to the overnight news. The zika virus epidemic has been granded a Global Health emergency. Now it entered unpredictable new phase. The cdc confirms a person in texas contracted the virus through sex with someone who traveled to venezuela. The World Health Organization says sexual transmission of zika is very rare and it is the first time anyone in the u. S. Has contracted the virus without traveling abroad. Ground zero of the epidemic the brazilian city of recife. Dr. Lapook is there. Reporter the Health Commissioner told me zika is rampant, sexual transmission not yet documented. Felt to be spread by mosquitoes and causing a devastating birth defect which is why pregnant women are so concerned. Fourth child. Baby . She says she is worried but had no obvious symptoms of zika. Cases of microcephaly across brazil total 4,000. Several hundred suspected cases just last week. Recife, is epicenter of an explosion of microcephaly, small head at birth linked to zika. Government workers go door to door adding chemicals to walter and spraying pesticides. In order to attack the mosquitoes breeding ground. A lot more mosquitoes in january of 2015 than november. This doctor took us to the situation room inside recifes Health Department where the city of 1. 6 million is charting the this is all recife. A lot of cases. Yes. Reporter the Health Department estimates, 50,000 to 100,000 people have been exposed. 80 of the time those infected with zika dont feel sick. What do you think when you see the babies with microcephaly and you know you are pregnant . She is worried about the threat of infection because it is a very critical situation. Really heartbreaking. Reporter the doctor told us this historically Impoverished Community needs to fiend a solution to an epidemic which threatens an entire generation. These children will be surviving the impact on their families. Cannot be measured at this stage. Apart from the scientific and Public Health persona, i think as human beings, we really feel the need to do something about it. Super bowl is just three days away. One Denver Broncos player will be watching the game on television. Safety ryan murphy on the practice squad, wasnt going to play anyway was sent home after questioned by police at a prostitution sting. But the team doesnt want him to be a distraction as they prepare for the sunday big game against the carolina panthers. Jeff glore has more. Reporter Denver Broncos safety, ryan murphy caught in a prostitution outside this hotel in san jose tuesday evening. The 23yearold played in college for or gun state. Questioned and released. He was not arrested. But police did issue his brother, who was with him at the time, a citation. The broncos sent murphy back to denver. In a statement, the head coach, gary kubiak, decided it was best for the team if we continued our preparations for super bowl 50 without him. A week of heavy distraction. Got to handle those things. Get ready to play. Reporter over the weekend kubiak addressed the importance to get to this point in your hard to get there. I talked to them about that all the time. Last min of the distraction 17 years ago, starting player for the falcons, Eugene Robinson arrested after soliciting sex from an undercover officer the night before super bowl 33. Robinson played the next day. That could be a living example. Dont mess this up. Radio analyst for the panthers, robinson spoke with the team sunday abut the dangers of game week temptations. I want my guys to know. I love this team. Hey, you got a great opportunity. Ach great opportunity. Go ahead and seize the moment. And dont in this respect be like me. Homeland security secretary jay johnston in Northern California everseeing the buildup of super bowl security. Sundays game is in Silicon Valley and will feature technologies never used before to keep the public safe. Michelle miller has more. Reporter this is one of several roadblocks along the perimeter of levi stadium to keep the prying eyes of the public out. Humvees, patrol cars on sight. One thing is for certain. Game, on sunday, you will be watched. And closely. Everywhere you turn, in the San Francisco bay area this week you will find a massive security presence. From the water to land. Even in the air. Quite a takeoff. The air and Marine Branch of customs and Border Protection is one of 50 Law Enforcement and Government Agencies working to keep super bowl 50 secure. Video cameras are powerful enough to show me the faces of any one in the vicinity of levi stadium. A structure with license plate readers and controversial trackers, that could let Police Monitor your phone. Since the super bowl was happening in the heart of Silicon Valley, some agencies are trying out new Technologies Program that gives Law Enforcement a complete picture of what is happening by integrating video feeds with agency cell phones and radio communications. Reporter outside levi stadium. Custom and