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发布时间: 2025-05-31 10:01:52北京青年报社官方账号
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This week, experts are sending warnings to those considering seeing people outside their household without quarantining first. One aerosol expert weighs in on just how dangerous the holiday could be."My simplest advice is it is not a good idea to meet with people outside of your household for a holiday meal. That’s the most important message that can be underscored, and the reason for that is there are multiple ways this virus can be transferred,” said Alex Huffman, an aerosol expert and associate professor at the University of Denver. “The closer you are increases the chances of that, but aerosols can come out of your mouth and mix into the room. The longer you're in that room, the more chance you have of getting sick.”Huffman says time, ventilation and proximity have a big impact on whether coronavirus droplets can spread and infect others."When you breathe and talk, the louder you talk, droplets and aerosols come out of your mouth. So, traditionally, droplets are on the bigger side, aerosols are on the smaller side," said Huffman.With no mask on, these droplets can land on the faces of people around you or on their plates."And so, the biggest danger with the Thanksgiving meal or holiday meal or any meal specifically, restaurants included, are that you have to take off your mask to eat and that is why eating together indoors is so dangerous," said Huffman.Huffman demonstrated how fast droplets can spread in the air by showing how quickly food coloring can spread in water. He also analyzed the risks of eating a Thanksgiving meal in person, taking commonly-used models and applying varying factors that come into play when eating with people outside of your household."And then, I used the same model to say, ‘What happens if we meet for holiday meals?’ Let's say we have 10 people. We all eat for two hours. We all don't have masks on, and then, we ran different scenarios. If it was a small room, a large room, a medium-sized room and then estimate the amount of risk that would be from aerosol," said Huffman.Matching with community transmission rates, Huffman estimated that the probability of each person at the table having COVID-19 was about 5 percent."If it's a small room, everybody has something like a 15 percent chance of getting infected, even if we had no idea if anybody was infected or not. If it's a big room, it's a little bit less than that," explained Huffman.Ventilation also comes into play, which is why experts are advising that if you really are planning to meet with family this holiday, do it outside. Opening windows and doors also helps. Huffman also has some tools people can use, such as a carbon dioxide monitor or you can create your own box fan air filter."On the back, this is a furnace filter that’s also 20 inches and so you tape them together so they're well-sealed. You turn it on high and you blow the air through this filter and that removes the particles in the room that could potentially contain virus in it," said Huffman.Still, Huffman and other medical experts agree this won't completely eliminate the risk of spreading COVID-19. The safest thing to do is stay home and avoid celebrating Thanksgiving with people who are not part of your household. 3230

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This is video of Friday morning's explosion recorded by an MNPD camera at 2nd Ave N & Commerce St. pic.twitter.com/3vaXhoUOAR— Metro Nashville PD (@MNPDNashville) December 28, 2020 202

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There have been a number of deadly bridge collapses through the years, some due to structural deficiencies and others in collisions or accidents. Here's a look back at the 10 deadliest incidents in the last half century. 228

  

There will not be a 2020 Minor League Baseball season.After having the start of the season delayed due to the spread of COVID-19, Minor League Baseball officials announced on Tuesday a decision to cancel the season.In 2019, Minor League Baseball attracted 41.5 million fans to ballparks across North America. The teams are supplemented by professional players signed by MLB squads, and are paid a much smaller salary than their big league counterparts. While MLB has decided to push forward with a shortened season starting July 23, Minor League Baseball’s revenue model would have made it impractical for a 2020 season given most of its revenue comes from gate attendance, concessions and merchandise, compared to MLB which sees a sizable revenue stream from TV.Even though the majority of Minor League Baseball players will not play in 2020, MLB teams have formed “taxi squads” of their top minor league players. The taxi squads will provide big league rosters with players ready to be called up in case of an injury at the MLB level."These are unprecedented times for our country and our organization as this is the first time in our history that we've had a summer without Minor League Baseball played," said Minor League Baseball President & CEO Pat O'Conner. "While this is a sad day for many, this announcement removes the uncertainty surrounding the 2020 season and allows our teams to begin planning for an exciting 2021 season of affordable family entertainment." 1485

  

There’s no doubt that this is probably one of the most polarizing election years in history.The tension can cause anxiety. According to the American Psychological Association, two in three adults say this election has been a major source of worry. Now health experts say that stress could also affect our children.Child and adult psychiatrist Dr. Judith Joseph has some advice for parents to help manage their children's anxiety during this time of unrest.She says it starts with communication. When there's a lot of stress in the environment, Dr. Joseph says that also cause the cortisol levels to also go up causing you to lose focus. It's important to talk to your children to find out how they're feeling.Next, use the election as a teaching moment and reassure them they are safe no matter the outcome. Create a project that involves kids learning about the voting process and how government works. Also, limit news exposure. Getting too much screen time can only lead to more anxiety.Furthermore, while creating a large change may be a bit of a stretch, Dr. Joseph urges parents to be honest about what’s happening in the world and focus on empowering our youth by allowing them to give back locally.Finally, encourage kids to keep a journal. Writing will also help them manage sleep and anxiety, further putting them on the right path to getting through these rough times worry free.This story was originally published by Stacy-Ann Gooden at WPIX. 1462

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