Gas Analysis Codivirus Method for Detecting the Threshold of Contagiousness and Therapy Adjustment
Abstract
To date, there is no easy-to-use method and device for its implementation for the detection of codivirusinfectious people by exhalation. The main method of covid infection is airborne when droplets of the infected saliva person enter the oral cavity of healthy person. Such method would make it possible to detect infected people and prevent them from entering in public places and send them to quarantine immediately. The method is not traumatic, unlike the PCR test, and along with other methods, it would allow adjusting the patients covid treatment in the hospital. Currently, gas analyzers are accurate research methods with a division value of 1 ppm. The purpose of this work is to identify which gases during the exhalation of infected or sick person are decisive, how to measure them during exhalation, how these gases are associated with entry proteins and enzymes of saliva? How change a gas concentrations depending from the infection and illness time, and what are their values?
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Introduction
The main route of covid infection is aerosolized saliva from person's mouth into mouth. Droplets are formed as result of coughing, sneezing or conversation [1,2].
Till three thousand infected small droplets are formed at coughing. Almost the same numbers of droplets are formed during 5-minute conversation [3]. A single sneeze produces up to 40,000 droplets of saliva with different dispersion to some meters [3]. Normal exhalation produces droplets of saliva that can be airborne up to 1 meter. Larger and heavier droplets of saliva tend to fall to the ground by ballistic trajectory. Small cloud droplets are formed and then with air currents are transported over longer distances [2,3]. Aerosols are solid particles suspended liquid in the air with ranging in size from 0.001 to 100 microns [3]. The time the droplets remain in the air travel depend from their size [3]. Large droplets (diameter > 60 µm) tend to settle quickly. Transmission via small droplets (diameter ≤ 60 µm) can occur over short distances (distance between people less than 1 m). There is possibility also that small droplets under favorable conditions will turn into airborne suspension of infectious particles (diameter <10 µm) and carried over longer distances [4].
In other words, oral cavity this is initial place of covid infection.
Conclusion
It is possible to detect covid illnesses by gas analyzers based on person’s exhalation. Carbon dioxide and a suspension of bicarbonates in saliva show a steady increasing to 150 and 20 ppm respectively. Both curves are characterized by the stage of infection, a sharp increasing in the concentrations of both gases from the first hours to 2-3 days of illness depending from different strains. Further, the disease stabilizes within 1-2 days. After that covid illness passes in medium or heavy form or the person recovers.