dr. mary bassett. good morning, everyone. i'm bill ritter. at least 11 confirmed cases of those in new york city, and at least one confirmed in new jersey, all of them believed to have been infected when they traveled to areas that had been hit hard by the virus. the only known human-to-human case in the u.s. is in dallas, where health officials say the virus was sexually transmitted. the centers for disease control issuing traveling advisories now for puerto rico and at least 29 countries -- among them, brazil, where the carnival is underway and where the olympics start this summer. millions of tourists in rio for brazil's carnival and millions more expected this summer for the olympic games -- controlling the zika crisis is more urgent than ever. >> [ speaking spanish ] >> last week, brazil's president saying the virus has gone from a distant nightmare to a real threat. the government scrambling to start developing a vaccine, but until one is ready, president says mosquito prevention is the government's best course of action. now, some are

dr. mary bassett, aging commissioner donna perotto and deputy commissioner for enforcement timothy hogan. as you can see, all city agencies are on alert and working together to address this challenge. we're headed into the coldest part of the forecast now. the city is facing some of the coldest temperatures and windchills we've seen in the last 20 years. i want to emphasize to all new situation is and how much people should change their habits over the next 24 to 48 hours this must be taken seriously. it's some of the coldest temperatures and windchills we've seen in the last 20 years. right now, temperatures are at 1 but when you add in windchills, it feels like negative 2. we are expecting sustained winds of 25 to 30 miles per hour today with gusts as high as 50 miles per hour. so on top of the extreme cold, we have wind that really will affect everyone who's outside, not only in terms of making it colder, but also making it hard to get around. that's another good reason why the maximum extent possible. the warmer temperatures have now passed. everything we'll see in the next 24 hours w