Is Coronavirus Air Borne? Read What Scientists Are Saying


The health agency has said the coronavirus disease spreads primarily from person to person through small droplets from the nose or mouth, which are expelled when a person with COVID-19 coughs, sneezes or speaks.

239 scientists from 32 countries have claimed that COVID-19 is an airborne virus.

"If airborne transmission is a significant factor in the pandemic, especially in crowded spaces with poor ventilation, the consequences for containment will be significant". In such a situation, the NYT report stated, masks may be as important inside a person's house as outside, even in socially-distant settings. They said more investigations and evidence were needed.

Morawska said that measures to mitigate airborne transmission include providing sufficient and effective ventilation, such as supplying clean outdoor air and minimising recirculated air, particularly in public buildings, workplaces, schools, hospitals, and aged care homes.

"Especially in the last couple of months, we have been stating several times that we consider airborne transmission as possible but certainly not supported by solid or even clear evidence", Dr. Benedetta Allegranzi, the WHO's technical lead of infection prevention and control, was quoted as saying by the NYT. "There is a strong debate on this".

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Interviews with almost 20 scientists, including a dozen WHO consultants and several members of the committee that crafted the guidance, and internal emails "paint a picture of an organization that, despite good intentions, is out of step with science", the report said.

According to the World Health Organization, coronavirus spreads primarily from person to person through small droplets from the nose or mouth, which are expelled when a person with COVID-19 coughs, sneezes or speaks.

Although the World Health Organization has said it is considering aerosols as a possible route of transmission, it has yet to be convinced that the evidence warrants a change in guidance.

Who says coronavirus is airborne?

The authors recognized that the evidence for microdroplet transmission was "admittedly incomplete", but argued that the evidence for large droplets and surface transmission was also incomplete yet still formed the basis for health guidelines. She said the United Nations health agency will try to broaden the committees' expertise and communications to make sure everyone is heard. We all must seriously take the necessary measures to reduce the chances of Covid-19 infection. "We think the virus has been transmitted this way all along, and knowing about it helps protect us". Airborne transmission is different from droplet transmission as it refers to the presence of microbes within droplet nuclei, which are generally considered to be particles 5μm in diameter, can remain in the air for long periods of time and be transmitted to others over distances greater than 1 m. The WHO also argued against closing global borders but it was soon realised it was an unfortunate but necessary measure to stop further spread. "So why not just mask up for a few weeks, just in case?" she said.