united states topped 1800 this week, mostly from travel to foreign countries. but in a miami neighborhood, health officials say local mosquitoes have now infected at least 16 people with the virus, which causes severe birth defects. pregnant women are advised to stay away from florida's so-called zika zone. as marlie hall reports, the outbreaks that sent a chill through florida's tourism industry. >> reporter: insecticide rained down on mime's zika zone. the sprayingti morning by air and by land. >> my one job is to protect this baby. i can't get bit by a mosquito. >> reporter: lisa isaza is 36 weeks pregnant. she and other expectant mothers, like leah lacero, are on edge. >> the most fearful thing is i don't want to have a child who ends up with some of the severe cerebral defects that have been talked about, including microcephaly. >> reporter: another concern-- visitors spent about $89 billion here last year. governor rick scott is doing damage control. >> this is a safe state. >> reporter: he says mosquito-control crews in miami-dade county have been effective, but a travel advisory warning pregnant women not to visit the area remains in effect. >> we've tested over 20,000 mosquitos now in our state, and we've not found one mosquito with zika. >> reporter: there could be a new weapon in the fight against the virus. approved testing of genetically modified mosquitos designed to stop the spread of zika by reducing the insect populations. mutant male mosquitos paz on a lethal gene to the females, killing their offspring. a trial of those genetically modified mosquitos could take place in the florida keys only if local residents vote in favor of it. reena. >> ninan: i wonder if they'll go for it. marlie, thank you. well, after the trump campaign's ahead. this weekend the republican ticket is trying a more pensive approach. errol barnett has more from washington. >> hi, mike pence. >> reporter: campaigning in indiana and ohio today, republican vice presidential nominee mike pence tried to rally his party behind donald trump after a troublesome week for the campaign. >> we're going to make america great again. i believe it with all my heart. >> if you don't like me, that's okay. vote same thing. great guy. >> reporter: on friday, trump adjusted his message. >> we need the unity. we have to win this election. >> reporter: he carefully read his endorsement of the republican leader in the house after saying he was not quite there yet days ago. >> i support and endorse our speaker of the house paul ryan. ( cheers and applause ) >> reporter: this tactical trump losing ground to hillary clinton. trump is also amping up his attacks. >> she's a monster. ( cheers ) okay? look at what happened. look at her history. in another way, she's a weak person. she's actually not strong enough to be president. >> reporter: now, with just over 13 weeks until the election, trump also trails clinton in campaign fund-raising. he's trying to close that gap tonight with his fund-raising event in weeks followed by dozens more over the next month. clinton returns to campaigning monday in the battleground state of florida. reena. >> ninan: errol barnett, thank you, errol. well, following the friday night lights of the opening ceremony, the summer olympics are now in full swing. saturday's highlights include the first gold medals of the game and a security scare. ben tracy has latest from rio. >> reporter: olympic cyclists took to the streets in rio, racing along this city's u.s. secretary of state john kerry was there of there and also went to see beach volleyball on the the famed copacabana beach. the first gold medals of the game went to an american. 19-year-old thrash won the 10-meter air rifle. the rowing competition is under way and there are concerns about the extremely polluted water. the serbian men's team ended up in the water when their boat capsized. what have you heard about the water? >> it's not as clean as it might be. ( laughter ) >> reporter: that's putting it nicely. >> reporter: at the main olympic park, spectators complained about long lines due to a lack of security screeners. the competition kicked off after last night's opening ceremony that lit up the night sky in rio. michael phelps led team u.s.a., but the refugee team competing under the olympic flag got the kurt jenkins and his friends came to rio and definitely have the olympic spirit. your favorite thing ever? >> yeah, like, american sports i don't care about-- football, baseball, basketball, i'm not the biggest fan, but i will literally watch every single hour of the olympics when it's on. >> reporter: there was a security scare here in rio today when a loud explosion was heard at the finish line of the men's cycling race. it turned out to be the bomb squad detonating a suspicious package and, reena, thankfully it turned out to thanks, ben. and in new jersey, dozens of people were hurt when a railing collapsed during a concert by snoop dogg and wiz khalifa. demarco morgan has more on the show-stopping accident. >> reporter: snoop dogg and wiz khalifa were rocking the mic when suddenly a metal railing in front of the stage came crashing down. heck was one of the dozens who fell during the concert mishap top of her. >> it was so hard to breathe. i couldn't move. i literally thought i was dying it was so scary. >> reporter: hecht said snoop dogg and wiz khalifa were performing close to the line when the crowd rushed the stage. the barricade broke. >> security guards started rushing over and trying to help people up, and i still couldn't move so i kind of just-- i was trying to push myself out, but i couldn't move. >> reporter: audrey jongens was just a few rows back from the rai. everyone, like, rushing to the front, people pushing me, too, and suddenly people started falling off the edge. like, i see all these people, like, come off edge. >> everybody stay calm. we're all good. >> reporter: more than 40 people were injured. only one was seriously hurt but everyone has been released from the hospital. snoop dogg and wiz khalifa both tweeted out well-wishes to their injured fans. there's another show at that same venue tonight featuring coolio cand there's a new railing in place. >> ninan: in belgium two female police officers were wounded by a man shouting in arabic and waving a machete. it happened outside a police station in charleroi. police shot and killed the man. it's being investigated as a possible terror attack. a judge in london denied bail for a teenager accused of murdering a retired teacher from florida. zakaria bulhan, who is of somali and norwegian descent, is accused of going on a stabbing spree last wednesday. five others were in rouen, france, least 13 people were killed when a fire swept through a bar during a birthday party. jonathan vigliotti has the latest from london. >> reporter: reena, this fire is all the more tragic when you consider how it began. five officials say a person was walking down the stairs to the basement carrying a lit birthday cake when they lost their footing and stumbled. the cake went flying. those candles ignited the flammable soundproofing foam nalined the wall. to the scene in time. they say all 13 people died, not from the flames, but from the toxic fumes released from that soundproofing foam. one witness told investigators the fire looked like a flame thrower saying everything happened so fast. this morning, all that remained were shattered windows and charred furniture. mourners gathered outside where they dropped off flowers. the victims were between the ages of 16 and 25 years old. reena, it's france's >> ninan: jonathan vigliotti in london. thanks, jonathan. well, protesters are taking to the street in chicago this weekend after police released video showing the fatal shooting of an unarmed african american teenager. the footage shows officers firing at the teen as he speeds away in a stolen car. three officers have been suspended. gas prices continue to fall across the country. a.a.a. says the national average for a regular gallon of gas is now $2.12. california, people are paying some of the highest prices. a consumer watch group says california drivers are being taken for a ride. here's carter evans. >> reporter: even though gas prices in california are a dollar a gallon cheaper than they were this time last year air, consumer group says drivers are still being ripped off. >> this is the golden state gouge at its full lustre. >> reporter: jamie court, president of "consumer watchdog," says the evidence is in the difference between today in los angeles, oil companies are selling each other gas at $1.26 a gallon, one of the lowest prices in the nation. but the average prees at the pump is $2.69 a gallon, one of the highest prices in the nation. >> if we have the lowest wholesale price for gasoline, we should also have lowest retail price for gasoline. >> reporter: it in a statement, the trade group that represents oil companies in the western u.s. said, "repeated investigations and an independent analysis have consistently demonstrated that california." "consumer watchdog" accuses oil companies of limiting the amount of gasoline they refine to keep retail prices high. and points to a recent remark from an oil company c.e.o. on an earnings call as proof: >> they can make enough. they choose not to. i think that's absolutely clear froms gasbuddy.com senior oil analyst patrick dehan isn't so sure. >> the nature in california may breed some what you could call less-competitive marketplace where there is less refiners. there may be slightly less competition and that probably does contribute to slightly higher prices. >> reporter: but you don't think it's price manipulation. >> based on the way the market has moved and watching numbers every day, i wouldn't call it manipulation. >> reporter: market analysts say it can take up to a month trickle down here to the pump, but, reena, in the meantime, california's attorney general is investigating. >> ninan: the first family arrived in martha's vineyard saturday. they're spending two weeks in the resort island off cape cod, massachusetts. the obamas have vacationed here every summer since the president took office in 2009, except in 2012, when he was running for re-election. coming up next, a month after the deadly police ambush in dallas, a surge of people are signing up to protect and serve. ? the sun'll come out tomorrow... ? for people with heart failure, tomorrow is not a given. but entresto is a medicine that helps make more tomorrows possible. ? tomorrow, tomorrow... ? entresto helped more people stay alive and out of the hospital than a leading heart failure medicine. women who are pregnant must not take entresto. it can cause harm or death to an unborn baby. don't take entresto with an ace inhibitor or aliskiren. if you've had angioedema while taking an ace or arb medicine, don't take entresto. the most serious side effects are angioedema, low blood pressure... ...kidney problems, or high potassium in your blood. ? tomorrow, tomorrow i love ya, tomorrow.? ask your heart doctor about entresto. and help make tomorrow possible. hi! welcome to the katy kat collection. my new mascara katy kat eye it's the all-day 360 cat eye ten times volume, darkness and no smudging katy kat eye and new katy kat matte lipstick from me and easy, breezy, beautiful >> ninan: hundreds of potential recruits are lining up to join the dallas police department after last month's deadly ambush of officers. omar villafranca tells us about the surge of people signing up shocked the nation. a lone gunman killed five officers in downtown dallas after a protest march and sparked a fiery response from dallas police chief david brown. >> serve your community. don't be a part of the problem. we're hiring. we're hiring. get off that protest line and put an application in. >> reporter: you know the area. >> yeah, i do, i know it very took chief brown's service to heart. the former navy military police officer now wantses to join the police department. what was your reaction when you heard him say that? >> i felt like he was directing that towards me because i am one of the guys that, when i see police where you tality or anything, kind of pointing the finger and saying what could have been done. and i decided to it was time to do something besides pointing the finger. >> go! >> reporter: in the weeks since the attack, the police department received an that's an almost 250% increase in applications compared to the previous month. sergeant george aranda heads up recruiting for dallas police. what do you tell the new recruits who are coming in? >> heart. check your heart. being a police officer, being a servant, it's not for everybody. you have to be willing, at any given moment, to put your life on the line for a complete stranger that you've never me before. >> reporter: sawyerments to serve the neighborhood where's he grew up to help build trust between cops and his community. >> i've made plenty of facebook posts and they've never gone anywhere besides a couple of likes and a couple of shares. so i believe actually going out there and being the difference is what we really need. >> reporter: the screening process for recruits can take up to three months. after that, it will be a year before they're able to patrol the streets. omar villafranca, cbs news, english rock band killed in a car crash now at the top of the what i love most about tempur-pedic mattresses is that they contour to your body. it keeps us comfortable and asleep at night. change your sleep, change your life, change to tempur-pedic. learn how you can change your sleep by requesting a free sample of tempur material. call or click today. 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(doorbell) what's that? swiffer wetjet. so much stuff coming up. this is amazing woah. wow. now i feel more like making a mess is part of growing up. man, my feet are killin' me. same time tomorrow, fellas!? dr. scholl's massaging gel work insoles absorb a hard day on your feet for comfort that keeps you feeling more energized. dude's got skills. dr. scholl's work insoles. >> ninan: cbs was lucille ball's tv home in the 1950s, but we close tonight in the in western new york. a new statue of the late, great lucy was unveiled today, but as vinita nair explains, this was a tale of two statues. >> here she comes! ( laughter ) >> reporter: after all these years, everybody still loves lucy. just not this version of the comedy legend. a statue of lucille ball in her home town of celeron, new york, caused many to gasp when it was unveiled in 2009. >> you could wax musume and see something so much better than this. >> reporter: locals drubbed six-foot-tall bronze sculpture "scary lucy." even the sculptor admitted his work was unsettling. after an online outcry, celeron's mayor launched a nationwide search to build a new likeness of lucy. artist carolyn palmer was selected and spent nine months studying the actress by watching reruns of "i love lucy." the launching of a great artistic career. let me buy this. ( laughter ) >> reporter: the result was revealed this morning as the town unveiled the new statue on what would have been lucille ball's 105th birthday. it weighs 800 pounds, is six feet tall with 2.5-inch heels and is made out of bronze. palmer says she wanted to portray lucy's and confidence. vinita nair, cbs news, new york. >> ninan: and as for scary lucy, she's still a draw for tourists so she'll be moved to another spot in the park. and that's the "cbs weekend news" for this saturday. later on cbs, "48 hours." and news, of course, continueses on our 24-hour digital new york cbsn on cbsnews.com. i'm reena ninan in new york. thank you for joining us. good night. (narrator) imagine, wiping away the appearance of crepey skin. on your arms... (female narrator) on your legs... (male narrator) and even your neck. (female narrator) what would your reaction be? -can i look now? -yes. are you serious? oh my goodness! (female narrator) and now a paid presentation for crepe erase. 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