New guidelines issued by WHO on Airborne Transmission of Coronavirus
                     New guidelines issued by 
WHO on Airborne 
Transmission of 
Coronavirus
Introduction
▸ On Thursday, the World Health Organization issued new guidance on the transmission of 
the novel coronavirus, which accept some reports of airborne virus transmission that 
causes COVID-19 but stopped short of suggesting that the virus spreads through the air. 
Source: Pixabay 2
The New 
Acknowledgement
In its latest guidance on transmission, the WHO 
acknowledged that certain outbreak reports 
relating to crowded indoor spaces have 
indicated the possibility of transmission of 
aerosols, such as during choral rehearsal, in 
restaurants or exercise classes.
Source: Pixabay 3
Reason Behind the 
Matter
The report follows an open letter from scientists 
who specialize in the spread of disease in the air-
so-called aerobiologists-that urged the global 
body to update its guidance on how the 
respiratory disease spreads to include aerosol 
transmission. 
Source: Pixabay
4
WHO’s Opinion
Based on its analysis of the evidence, the WHO 
said the coronavirus that causes COVID-19 
spreads through contact with contaminated 
surfaces or near contact with infected individuals 
who transmit the virus through saliva, respiratory 
secretions or droplets produced when an infected 
person coughs , sneezes, speaks or sings.
Source: Pixabay
5
Simple Suggestion
However, the new guidelines suggest that people 
should avoid crowds and ensure good ventilation 
in buildings, as well as social distance, and 
encourage masks when physical distancing is not 
possible.
Source: Pixabay 6
Airborne Vs Droplet 
There are two examples of one phenomenon: 
airborne and droplet. 
Microorganism that is less than 5 micrometers is 
considered airborne, and is considered droplet by 
more than 5 micrometers.
Source: Pixabay
7
The Difference
They said the differences between droplets and 
aerosols should be based on how the infection 
occurs, rather than on size: if a person inhales the 
virus and becomes infected, it is an aerosol. 
If the contagion happens by touch, they are 
droplets.
Source: Pixabay 8
How Dangerous is 
Airborne Spread?
It is believed that only a very small number of 
diseases are spread via aerosols, or small, 
floating particles. Which involve measles and 
tuberculosis-two extremely infectious diseases 
which can persist for hours in the air and require 
strict precautions to avoid exposure.
Source: Pixabay 9
Prevention
1. In the present situation, it's also safer to wear a 
mask when venturing out to keep respiratory 
illnesses away in crowded places. 
2. Seek to maintain physical distance of at least 3 feet, 
and wash your hands regularly for at least 20 
seconds with soap and water. 
3. Do not take excessive touch of your neck. 
4. Practice respiratory etiquette.
Source: Pixabay 10
Thanks!
11