The spread of coronavirus infections mainly occurs indoors, and scientists have been warning about this for a long time. Now, in an open letter to Chancellor Merkel, they explain why they oppose certain restrictive measures. Debord.
Leading scientists from the German Aerosol Research Association wrote in an open letter to Chancellor Angela Merkel and Minister of Health Jens Spahn: “The spread of this virus is almost exclusively indoors. Happened.” They believe that anti-pandemic measures restricting outdoor activities, walking or announcing a curfew send the wrong message that danger lurks outdoors, increasing the likelihood that people will meet in private homes and apartments where the dangers are greatest.
Scientists wrote: “For a long time, discussions about walking the promenade, sitting in the bar garden, running or cycling have the opposite effect.” They say that constant warnings to avoid all contact-even open-air contact-will increase people. Fatigue on these measures. “As far as we know, when people keep sounding the alarm, people feel dull.”
Aerosols are tiny particles floating in the air and are the main culprit for the spread of the coronavirus. According to scientists, this mainly happens indoors. Nico Mutters, director of the Institute of Public Health at the Bonn University Clinic, said: “Because of the higher air circulation in the open air, there is wind current, so the aerosol concentration is quickly diluted.”
Virologist Alexander Kekule said it was similar, but added-if you are at least one and a half meters away from the outdoors, all this is correct. “If you don’t keep a certain distance, talk loudly, sing, yell, and spit face to face with each other-so you can get droplets instead of aerosols.”
Studies have confirmed that the risk of outside infection is extremely low. A study from China investigated 7,324 cases of infection-only 1 of the public cases. Kekule said the same goes for viral mutations-they are highly infectious, but the measures remain the same. The virologist said: “The mutation will not fly anymore.”
Physicist and aerosol researcher Gerhard Scheuch said: “The earlier the artificial aerosol cloud will be broken,”. When asked, for example, on grasslands where different groups of people live, whether wind might carry aerosols from one group to another, Scheuch said, this is actually impossible.
The physicist told DW: “Just because of body temperature, a kind of airflow is produced, and most of the airflow rises like a fireplace.” Because the body temperature of about 37 degrees is usually higher than the outside temperature. “That way, the warm air will climb up, even the cloud of smoke.”
An Iranian study also confirmed that wind has no role in spreading the virus.
This has not been fully scientifically elucidated. American researchers tracked the occurrence of infections in warm, cold, dry and humid areas in China, but found no differences. An Austrian study found that the sun’s ultraviolet radiation kills viruses on the surface, but has little effect on the spread of infections between people.
Mutters says that you should not rely on the sun-there will be more UV radiation in summer, but, for example, in snowy areas, UV radiation is even higher due to the reflection of snow. In addition, he pointed out that the pandemic affects both warm and cold regions.
On the other hand, Kekule believes that this does not explain the nature of things, because he believes that even in warm areas, people will be infected in large numbers. He said: “That’s where they stay more where the air conditioner and fan are.”
Experts say, for example, when jogging, athletes should not keep a distance of one and a half meters, despite the fact that during physical exercise, they will breathe deeper and emit more particles into the air. Birgit Wehner, an aerosol researcher at the Leibnitz Institute, said: “Even if someone just runs over, even if they are very close, the risk is very small.”
Her colleague Gerhard Scheuch also thinks so-panting athletes must stand for long periods of time to spread the infection. This is why he will not encounter problems in team sports like football. “But there are problems when using locker rooms or toilets. These are dangerous rooms. They need to be well ventilated.”
A Dutch study showed that the gap between athletes last year was even greater, which is controversial. They said that cyclists should keep a distance of twenty meters. Critics pointed out that the research was conducted in a wind tunnel, not under realistic conditions.