Scientists have explained the way to prevent the corona epidemic: the rate of wearing a mask is expected to increase to 70 percent.

More than 1 million and 468 thousand people have died from the new type of coronavirus epidemic (Kovid-19), which first appeared in Wuhan, in the Chinese province of Hubei, in December 2019 and quickly spread around the world. , while the number of those affected by the deadly epidemic has exceeded 63 million.

While many unknown details about the coronavirus continue to stand out, experts continue to investigate the point as the outbreak stops.

ATTENTION IS THE IMPORTANCE OF USING FACIAL MASKS

According to Popular Science news, health experts often recommend using a face mask to reduce the spread of Kovid-19. This has led to studies investigating the physics of using masks, as well as investigating materials, designs, and other factors that influence how masks work.

In the study published in the journal Physics of Fluids, the researchers looked at the research on face masks and their use, and summarized what we have learned so far about the ways in which face masks filter or block the virus.

BELOW 5 MICRONS ARE MORE DANGEROUS

One of the important factors affecting the function of the face mask is the size of the droplets of liquid that the person exits from the nose and mouth while talking, singing, sneezing, coughing and even simply breathing. Large droplets of around 5-10 microns are the most common of these. But these droplets are still quite small. For comparison; a human hair has a diameter of about 70 microns.

In fact, smaller droplets below 5 microns are likely to be more dangerous. These become aerosols and remain suspended in the air for a long time. Of the many mask types used (fabric masks, surgical masks, and N95 masks), only N95s can filter aerosol-sized droplets.

The efficiency of face masks that are worn for hours while healthcare workers and other necessary workers wear determines the overall effectiveness of a mask. Thermal comfort is an important issue, especially in hot and humid environments.

A MORE PRECISE SHAPE MUST BE DETERMINED

Researchers found that face masks made from hybrid polymer materials filter out particles with high efficiency and cool the face at the same time. Since the fibers used in these special masks are transparent to infrared rays, they allow heat to escape from under the mask.

Lead author Heow Pueh Lee states:

“There may be some connection between the breathing resistance and the flow resistance of the mask. This connection needs to be examined in terms of time of use. In addition, in such studies, the environmental conditions of the area inside the face mask need to be determined. with greater precision using miniaturized sensors and mannequins “.

If the multiplication coefficient falls below 1, the epidemic stops spreading

The researchers also studied epidemiological studies aimed at determining whether face masks reduce the effective reproductive coefficient. If the reproduction coefficient falls below 1, the spread of the epidemic stops. In one of the studies, Kovid-19 data in the US state of New York was used.

THE SPEED OF USE OF THE MASK MUST UP TO 70 PERCENTAGE

Sanjay Kumar, the study’s author, said:

“The results show that continued use of effective face masks such as surgical masks can lead to the end of the epidemic, but if at least 70% of urban residents use such masks consistently in public. efficiency can slow down the spread if worn continuously. “