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Two studies released this week are offering some hope for parents and school districts looking to reopen this month across the country.The studies, one from the United Kingdom and the other from Australia, were published in the journal The Lancet Child & Adolescent Health this week and try to help inform ongoing discussions around reopening schools.A team in Australia was able to look at results from students who remained in class between January and early April.Researchers found even though schools remained open in New South Wales, children and teachers did not contribute significantly to the spread of Covid-19 -- because good contact tracing and control or quarantine strategies.Their data showed that while 27 children or staff at 25 schools and daycares had attended school while infectious with Covid-19, only 18 other people later became infected.That’s an attack rate of 1.2 percent. Overall, the attack rate of child-to-child transmission was 0.3 percent, while the attack rate of adult staff member to another adult staff member was 4.4 percent.“With effective case-contact testing and epidemic management strategies and associated small numbers of attendances while infected, children and teachers did not contribute significantly to COVID-19 transmission via attendance in educational settings,” the Australian team of researchers state in their report.In the British study, researchers looked at models on returning to school with different scenarios, including increased testing, isolation measures for positive cases, and levels of contact tracing.The models the researchers ran assumed that 75 percent of those with positive test results are contacted, provide information for contact tracing and isolate, and that 90 percent of that person’s contacts are reached by contact tracers and asked to isolate.The team assumed between 59 percent and 87percent of symptomatic people in the community would need to get tested at some point during their infection, testing results would be returned in one day, and those asked to isolate would do so for 14 days.Researchers made it clear that these levels would be needed to reopen schools.“However, without these levels of testing and contact tracing, reopening of schools together with gradual relaxing of the lockdown measures are likely to induce a second wave that would peak in December, 2020,” their report stated. “To prevent a second COVID-19 wave, relaxation of physical distancing, including reopening of schools, in the UK must be accompanied by large-scale, population-wide testing of symptomatic individuals and effective tracing of their contacts, followed by isolation of diagnosed individuals.” 2683

Twitter users across the US reported the social media was out on Thursday evening. The outage was first reported shortly before 6 p.m. ET, but the service began to recover within two hours. It is unclear what caused the outage."We are continuing to monitor the issue, and things appear to have returned to normal. For streams, if your connection was maintained during this period, you should have received available data since this issue also affected the publishing side of Twitter. If you disconnected at all, a Replay will recover any Tweets during your disconnect, and the volume is likely to be very small," Twitter said Thursday evening. According to Down Detector, the outage occurred nationally among thousands of users. 736

Unless you're one of the millions who've already voted, Tuesday is your last chance to cast a ballot for the 2018 midterm elections.Before you head out the door, here are the key things you need to know. 216

Truly heartbreaking. Stay safe, El Paso. Please follow all directions of emergency personnel as we continue to get more updates. https://t.co/BU0AH6Y8Rv— Beto O'Rourke (@BetoORourke) August 3, 2019 215

Uber is adding another transportation option on its app: the electric bike.The new electric motor option called JUMP is just in a few cities right now, but the company hopes to soon make it nationwide.“It's part of a growing mobile effort by Uber to provide all kinds of modes of transportation,” says Dave Nelson, director of operations for JUMP Bikes. “JUMP is an electric, dockless bike that allows you to go further faster and have more fun doing it.”  Similar to electric scooters, the bikes start at ; for every minute after the first, it costs <云转化_句子>.15.Users log into their Uber app in order to request the bike. The app tells you where the bike is located. Once you find your bike, you simply punch in a code and the bike is yours to use.So, what makes Jump bikes different than the motorized transportation options already available?“It is a dockless bike that allows you to pick it up, lock it, drop it off anywhere that's convenient for you,” explains Nelson. “And then, the biggest difference is, that it's electric. It takes you 20 miles per hour and lets you get to where you are going a little quicker.” 1130