A new study by scientists about the crucial role in Covid 19 transmission was done from the National University of Singapore (NUS) and conducted at the National Center for Infectious Diseases (NCID). It shows that coronavirus particles cause the acute respiratory syndrome. Severe Virus (SARSCoV2) can be sprayed by an infected person while talking and talks. They also found that fine aerosols (less than 5 microns in size or resulting from these two types of activity contain more viral particles than large aerosols (> 5 microns). That small respiratory aerosols can play an important role in SARSCoV2 transmission, especially indoors and should therefore be taken into account when planning infection prevention measures SARSCoV2 virus is generated.This is the first study to quantify and compare SARSCoV2 particles in aerosols produced by breathing, speech and singing.

The study was first published online in Clinical Infectious Diseases on Aug. 6, 2021. This cone acts as a ventilation hood through which air is continuously drawn in around the participant’s head, allowing exhaled particles to be collected in the connected sampler.

The aerosol was divided into fractions of two sizes, namely coarse (more than 5 µm) and fine (less than or equal to 5 µm). The viral load of the sample was quantified using a method known as a quantitative reverse transcriptase-polymerase chain reaction.

It is been observed that patients with COVID19 who were in the early stages of the disease had a reduced ability to detect detectable levels of SARSCoV2 RNA in respiratory aerosols. However, there were differences in detection. Transmission of the virus among people who speak rather than sing as said by Dr Kristen Coleman of Duke NUS School of Medicine, co-director of the project.

Journal was published on March 29, 2020, entitled “Modes of transmission of the virus causing COVID19: implications for infection prevention and control” includes new scientific evidence on the crucial role in Covid 19 transmission.

This scientific report provides an overview of crucial role in Covid 19 transmission modes, what to know when infected people transmit the virus and the implications of infection prevention and control measures within and outside countries.

To date, the transmission of SARSCoV2 with this aerosol has not been demonstrated; More research is needed on the possible consequences of this transmission route.

To better understand the role of transmission from asymptomatic infected people, it is important to distinguish between transmission from infected people who have never had symptoms (75) and transmission from infected people who have not yet shown symptoms. Current evidence suggests that SARSCoV2 is transmitted primarily between humans via respiratory droplets and contact pathways, although aerosols are used to generate aerosols in healthcare settings. This is another possible route of transmission, and the crucial role in COVID 19 transmission occurs in asymptomatic or symptomatic individuals. Close contact with others when appropriate PPE is not used. Transmission can also occur in infected individuals who remain asymptomatic, but the extent to which this occurs is not fully understood and warrants further investigation as an urgent priority.

Despite a large amount of scientific research, all studies investigating transmission must be interpreted in light of the context and context in which they are conducted, including interventions. Infection prevention interventions were carried out, the rigour of the methods used in the study, and the limitations and bias of the study design.

Urgent qualitative research is needed to clarify the relative importance of the various modes of transmission; the role of airborne transmission in the absence of aerosol generation procedures; the dose of the virus required for transmission; profiles and risk factors for hyper breeding events; and the degree of asymptomatic and asymptomatic transmission.

The risk of transmission is greatest within three to six feet of the source of infection, where the concentration of these droplets and very small particles is greatest.

The risk of transmission is higher near the source of infection, where the concentration of exhaled droplets and particles is higher.

Airborne virus concentration decreases when larger, heavier respiratory droplets containing the virus fall to the ground or other surfaces by gravity, leaving very small droplets and aerosol particles. The airflow gradually mixes and dissolves inside, the volume increases, and the air currents they encounter.

SARSCoV2 can be transmitted by inhalation of airborne viruses more than six feet from the source of infection.These transmissions involve the presence of an infectious person breathing the virus in the home for an extended period, resulting in a concentration of the virus in the air sufficient to transmit the disease to distant people. Cases for people who passed through this space shortly after the infected person left. Although animal and epidemiological studies indicate that inhalation of the virus can cause infection, the relative effects of inhalation of the virus and its deposition on the mucous membrane remain unproven and difficult to identify.These techniques will reduce the transmission of both inhaled viral contamination and virus deposition on exposed mucous membranes.