Corona-distribution: Sinister statement to the mask duty – “So small particles …”

  • ofAndreas Schmid


Aerosols are an ever-increasing playing a role in the Corona research. The small particles could be for any second infection responsible. What can you do about it?

  • What is the role of so-called Aerosols in the case of the Transfer of the Coronavirus?
  • The small particles may be, for each of the second Corona-infection is responsible.
  • It can protect you at all in front of you?

Munich – In the research of Corona-Infection Due To scientists increasingly take the so-called Aerosols under the magnifying glass. Thus, a mixture of solid or liquid suspended particles, like particles of Sars-CoV-2 – in the air referred to. What is the role of Aerosols in the case of possible Corona Transfer?

Corona: “Pretty sure that aerosols are one of the ways that Covid-19 common”

“We are pretty sure that Aerosols one of the ways through which Covid-19 widely used,“ explains the former President of the International society for aerosols in medicine, Gerhard Scheuch, recently, the German Press Agency. Lubrication infections about played less of a role.

There are many questions that are still open, so Scheuch – for example, how the Virus is ride while you Speak, or what role temperature plays. “There’s a lot of research work needs to be done,” he said. “But it is being researched more and more in that direction.” Long is not clear, therefore, how infectious the dried aerosols.

Corona/aerosols: particles to blame for any second infection?

According to The Robert Koch Institute the Virus is transmitted mainly through droplets produced during coughing and Sneezing, and when Compared with the mucous membranes are included. Aerosols – defined as droplet nuclei smaller than five microns – but could also contribute, “even if a final evaluation at the present time is difficult.”

Virologist Christian Drosten* of the Berlin’s Charité Hospital speaking in his Podcast of a study from Hong Kong, with the effect of Aerosols has busy. Therefore, the particles for the infection with the be Coronavirus probably as relevant as the droplets of infection. The study suggests that Aerosols possibly to blame for every second infection. Even in a Restaurant in Leer you were probably the reason that many of the guests are infected.

Corona/aerosols: How long is the small particles stay in the air?

As long as there is a potential threat, researchers have examined already: A Team from the USA has been measured with laser light, the life time of small droplets in the air produced when Speaking. Thus, they disappear in a closed environment with a stationary air only after 8 to 14 minutes. In conclusion, it is said, “that there is a significant probability that to Speak normally created in limited environments, Transmission of viruses in the air”.

According to Scheuch could Aerosols in enclosed spaces, even over hours, and can be infectious. A push of breath containing 1000 particles. “Outside, the dilution is strong, inside it accumulates.”

Aerosols as the Corona-Problem and masks are powerless? “Small particles are difficult to filter”

Remedy to the Mouth-Nose Protection* create. However, you have to know that the masks, particles may not be able to stop with a diameter of up to two micro meters, well almost all. Nevertheless, the simple masks had a significant effect, says Christian Kähler by the Institute of fluid mechanics and aerodynamics at the University of the Bundeswehr München“You flow offer resistance. Rather than particles the far outside of the blow, keep you close to the head.“

Scheuch sees the matter a little more pessimistic and declared: Because Coronavirus only around 0.1 to 0.14 microns is large enough, not even the so-called FFP-masks*. “Which are for larger bacteria. Such small particles are difficult to filter.“ Particulate filters were a better fit. But this is yet to be explored.

Coronavirus: mask duty is pointless? Pictures prove the opposite

The devil on the wall, you should not paint, therefore, but, because the Mask duty shows definitely its effect, as a study confirmed now and the Bundeswehr Munich, explored Christian Kähler. The following two photos, the breathing show air of a ausatme man with and without mouth protection. The exhaled air is shown in color.

The respiratory air of a ausatme man with mouth protection.

© Reuters / Christian Kähler

For Comparison:

The respiratory air of a ausatme man without a Mouth guard.

© Reuters / Christian Kähler

Corona/aerosols: Drosten tips – “so you can reduce aerosol component”

Develop Aerosols ultimately, however, a real Problem? There is also good news, because the most critical point, the distribution of the particle counter is simple: regular and effective Ventilation, such as Christian Drosten compared with the “Germany radio” will be explained. “If it is so, that a Virus is in the air in a room, then the room air needs to be moved, of course, and be promoted.”

The distance, the spit droplets can travel. The stronger the acceleration, the faster the particles move.

© Graphics: F. Bökelmann; Editors: D. Delete

This could make everyone in a simple way, Drosten continued: “That is, if you open the window, since a large cooling fan inside, which blows the air to the outside, and the door makes a gap. Then you can vent, of course a room like this and certainly can also decrease as an aerosol component.“

Since Tuesday, that’s the sparks – and in the literal sense: the New Corona App for our phones is ready to use, you can you download on Android and Apple devices.


* is part of the nationwide Ippen-Digital editors ‘ network

Section list image: © dpa / Marijan Murat

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