Study: 90 percent 'strength' of corona decreases in air, must follow these two rules to avoid infection


Amidst the increasing infection of the coronavirus, a study has claimed that the ability to infect a person after being in the air (airborne) decreases by 90 percent within 20 minutes. However, within five minutes of becoming airborne, corona can cause more harm to people who come in contact. Also, the world's first simulation has shown how the virus survives in the air.


Physical distance and masks are necessary
This study concludes that the transmission of COVID-19 is only for a short time in the air, so physical distancing and wearing a mask may be more effective. This can go a long way in preventing corona infection. However, stopping air circulation is still one of the worthwhile measures, it is likely to reduce the effect of the corona.

According to the media report, Professor Jonathan Reid, director of the University of Bristol's Aerosol Research Center and lead author of the study, said, "People are focusing on less ventilated places and people believe that the transmission of airborne is up to a meter or so." Could happen in the room itself. I'm not saying it doesn't happen, but I think the risk of infection is highest when you're close to an infected person."

"When you move away from an infected person, not only is the aerosol less effective, but the virus's infectious ability is also less because the virus loses its ability to infect as a result of time," he said.


The virus's ability to transmit infection decreases when exposed to air
Researchers say that 'the air dries out the viral particles and the reduction of carbon dioxide in the air raises the pH level of the virus, both of which make the virus less infectious. In relation to how quickly the infectivity of the coronavirus decreases and the role humidity plays in this, the researchers found that the coronavirus in dry air loses infectivity faster than in moist air.

How long does the virus survive in the air?
How long does the virus survive in tiny droplets after airborne? Our assumptions in this regard so far are based on a study in which the survival of the virus was detected by keeping it in a sealed vessel, which is called a 'Goldberg drum'. Using this method, US researchers found that the infectious virus could remain alive after three hours. But such experiments do not prove precisely what happens when we cough or breathe?

Instead, researchers at the University of Bristol, Reid said, developed devices that allow them to generate any number of tiny, virus-containing particles, slowly letting them in while tightly controlling its ambient temperature, humidity, and ultraviolet light intensity. The electricity allows for anywhere between five seconds to 20 minutes to be taken between rings. "This is the first time anyone has actually been able to figure out what happens to aerosols during the process of exhalation," he said.

The new instrument tested how long COVID-19 can survive in tiny airborne particles under conditions of heat, moisture, and light. However, this study has not yet been reviewed.

The researchers suggested that as the viral particles exit the lungs in relatively moist and carbon dioxide-rich conditions, they rapidly lose moisture and dry out and that the lack of carbon dioxide in the air raises the virus's pH level. . Both of these factors impede the virus's ability to infect human cells, but the speed at which the particles dry varies according to the relative humidity of the surrounding air.

Less chance of infection in dry air
When it is less than 50 percent (similar to the relatively dry air found in many offices), the virus loses about half its infectivity within five seconds. After which the rate of decline in infection becomes slower and more stable and drops further to 19 percent in the next five minutes. At 90 percent humidity (roughly the equivalent of a steam or shower room) the decline in infection is gradual, and 52 percent of particles remain infectious after five minutes, dropping to about 10 percent after 20 minutes. After which there is no difference between the two conditions (dry and humidity) i.e. virus infection in the air decreases within five minutes to 20 minutes.