Recently, many places, including Beijing, Xi'an, and Nanjing, have entered the flying feather period, and the "full city flying feather" has made many people start to worry about whether the flying feather will lead to the risk of the spread of the new crown virus.
At the press conference of the joint prevention and control mechanism of the State Council held on April 12, Wu Zunyou, chief expert of epidemiology of the Chinese Center for Disease Control and Prevention, said that the new crown virus generally does not spread directly from an infected person to a healthy person in the form of a free virus, and the new crown virus usually uses droplets as a carrier to adsorb on the surface of tiny droplet particles, patients discharge through coughing and sneezing droplets, and the virus adsorbs on the particles with droplets.
"Droplets are generally relatively small, at 1-5 μm, the distance of transmission should be 1-2 meters, when healthy people inhale droplet particles adsorbed by the virus, they are infected." Wu Zunyou said.
As for whether the new crown virus that everyone cares about will spread through the willow flying, Wu Zunyou said: "It should be said that it will not. In the past two years or so, no fly can absorb the virus, and on the other hand, there have been no reports of infection caused by fly flops so far. ”
Every year from April to June, the north and south of the continent are invaded by flying feathers.
In Northern China, the main tree species that produce flying feathers are poplar and willow. In Beijing, for example, the flying period generally lasts for about 50 days from early April to late May.
In the south, taking Nanjing as an example, from April to June every year, the fruit of the Fatong Street tree is ripe and cracked, and the fruit is scattered with the wind, which has a certain impact on the travel and life of the citizens.
For people who are prone to allergies, every spring and summer, they must experience the fear of being dominated by flying feathers, "suddenly like a night of flying feathers, thousands of people rhinitis offenders." Wang Qirui, a researcher at the Henan Academy of Forestry Sciences, said that during the germination of The Fatong, many people will feel dry throat and pain when they go out, many of which are caused by the hair of the Fatong, and the same is true of the Willow Flying Feather.
So, for the hair that is flying all over the sky, how to protect people who are prone to allergies?
In addition to causing allergies, flying feathers are also prone to fire. Because the willow fly contains a lot of grease, it is very easy to burn after encountering an open flame, and the spread speed is extremely fast, during the flying season, it is necessary to close the doors and windows as much as possible to avoid the flying feathers entering the room. Flying feathers entering the room should be cleaned in time. Flying floc is flammable, must not throw cigarette butts on the ground or use other open flames to ignite the flying floc, so as not to cause fire and other accidents. (Copywriting/Poster Design: Wang Ying Comprehensive State Council Joint Prevention and Control Mechanism Press Conference, CCTV News Report)