The study, published in the journal Physics of Fluids , Correlations between people’s physiological features and the extent to which their sneezing droplets transmit and remain in the air. Using computer-generated models, scientists simulated sneezing in different types of people and identified biological features that could make a person a super-spreader of viruses such as the new coronavirus that causes Corona.
Characteristics of the person spreading the virus–
Exposure to respiratory droplets of the affected individual
According to scientists from the University of Central Florida (UCFIn the United States, some problems, such as a blocked nose, can increase the likelihood of viruses spreading by affecting the extent to which droplets are transmitted, when they sneeze.
The US Centers for Disease Control and Prevention indicated CDCEarlier, that the main way people become infected with the new Coronavirus is through exposure to respiratory droplets, such as sneezing and coughing, carrying the infectious virus.
Factors affecting travel distance of respiratory droplets
The study’s co-author said that knowing more about the factors that affect the extent to which these droplets can be transmitted to efforts to control their spread.
He added, “We show that the human body has influences, such as the complex airway system associated with nasal flow that actually disrupts the plane of your mouth and prevents it from dispersing droplets over long distances.”
The researchers said that when a person has a clear nose, the speed and distance of the droplets of sneezing decreases, and vice versa when the nose is congested, the area from which the sneeze can exit is restricted, causing the sneezing droplets to be expelled from the mouth to increase the speed.
In the research, the scientists used 3D modeling and numerical simulation to recreate 4 types of mouth and nose – someone with clear teeth and nose, someone with no teeth and a clear nose, someone with no teeth and a congested nose, and someone with teeth and a congested nose.
When they simulated sneezing in the various models, they found that the spray distance of the droplets expelled when a person had a congested nose and a full set of teeth was 60% more than it was when they did not.
The results revealed that when someone kept their nose clear, such as blowing it into a tissue, it could reduce the distance germs traveled.
The results show that exposure levels are highly dependent on fluid dynamics that can vary depending on many human traits, and such traits may be fundamental factors driving superpagation events in a pandemic. Corona“.
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