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Recently, in a new study (not peer-reviewed) published on the preprint server MedRxiv, researchers from the University of Bristol in the United Kingdom found that after exhaling the air of the new coronavirus, infectivity will be lost within 20 minutes by 90%.
%
.
This means wearing masks and maintaining social distancing are especially important in preventing the spread of the virus
.
Understanding the factors that influence the survival of 2019-nCoV in the air in aerosols is important for determining transmission routes and various strategies to slow the spread of the virus
.
In this study, the researchers used a novel instrument to measure the stability of the new coronavirus in aerosol droplets over a time scale of 5 seconds to 20 minutes
.
They found that the rate at which virus-laden aerosols dries depends on the humidity of the surrounding air
.
When the humidity is lower than 50% (similar to the environment in an office), the virus will lose 50%-60% of its infectivity within 5 seconds; then, the speed of the virus infectivity will slow down, and the infectivity will further weaken to 19 in 5 minutes %
.
The researchers observed that within 10 minutes, the infectivity of the new coronavirus was reduced to 10% of the starting value
.
Study lead author Jonathan Reid, Director of the University of Bristol's Centre for Aerosol Research, said: "People have been concerned about poor ventilation in the space they are in, and there is concern that the virus can travel from one end of the room to the other through the air
.
I'm not saying that this is not It happens, but I think the risk is highest when you're in close proximity to other people
.
" However, the researchers found that at 90 percent humidity (similar to a steam bath), the rate of infectivity of the virus slowed down
.
About 52% of the virus particles were still infectious after 5 minutes, and it was only after 20 minutes that the infectivity decreased to about 10%
.
At the same time, the study also found that temperature does not affect the infectivity of the virus, which is different from the general belief that the virus is less infectious at high temperatures
.
In the early days of the outbreak, it was argued that hot weather could kill the virus and end the epidemic
.
Because the previous hot weather made the SARS virus disappear
.
"This means that if I'm having lunch with friends at a restaurant today, the main risk is that we 're
spreading the virus from one another, rather than someone passing the virus from across the room," Reid said
.
In the case of distance, it is very important to wear a mask
.
” Paper link: https://doi.
org/10.
1101/2022.
01.
08.
22268944
%
.
This means wearing masks and maintaining social distancing are especially important in preventing the spread of the virus
.
Understanding the factors that influence the survival of 2019-nCoV in the air in aerosols is important for determining transmission routes and various strategies to slow the spread of the virus
.
In this study, the researchers used a novel instrument to measure the stability of the new coronavirus in aerosol droplets over a time scale of 5 seconds to 20 minutes
.
They found that the rate at which virus-laden aerosols dries depends on the humidity of the surrounding air
.
When the humidity is lower than 50% (similar to the environment in an office), the virus will lose 50%-60% of its infectivity within 5 seconds; then, the speed of the virus infectivity will slow down, and the infectivity will further weaken to 19 in 5 minutes %
.
The researchers observed that within 10 minutes, the infectivity of the new coronavirus was reduced to 10% of the starting value
.
Study lead author Jonathan Reid, Director of the University of Bristol's Centre for Aerosol Research, said: "People have been concerned about poor ventilation in the space they are in, and there is concern that the virus can travel from one end of the room to the other through the air
.
I'm not saying that this is not It happens, but I think the risk is highest when you're in close proximity to other people
.
" However, the researchers found that at 90 percent humidity (similar to a steam bath), the rate of infectivity of the virus slowed down
.
About 52% of the virus particles were still infectious after 5 minutes, and it was only after 20 minutes that the infectivity decreased to about 10%
.
At the same time, the study also found that temperature does not affect the infectivity of the virus, which is different from the general belief that the virus is less infectious at high temperatures
.
In the early days of the outbreak, it was argued that hot weather could kill the virus and end the epidemic
.
Because the previous hot weather made the SARS virus disappear
.
"This means that if I'm having lunch with friends at a restaurant today, the main risk is that we 're
spreading the virus from one another, rather than someone passing the virus from across the room," Reid said
.
In the case of distance, it is very important to wear a mask
.
” Paper link: https://doi.
org/10.
1101/2022.
01.
08.
22268944
