Govt. ‘watching’ WHO alert on airborne spread of virus. For your safety you are only responsible for yours. Always carry mask, never leave mask, sanitizer, gloves, keep social distancing. Be careful even at home. Whenever you come from outside firstly sanitize your self then do anything, make this is your first priority. Wash your hands at short intervals. “Care-less accident face”
After earlier denials, the World Health Organisation has said that there is evidence emerging of the airborne spread of the coronavirus.
Over 230 scientists across the world urged the global body to update its guidance, pointing to the evidence showing that smaller particles can infect people.
- According to the technical lead on the COVID-19 pandemic at the WHO, there is a possibility of airborne transmission and aerosol transmission as one of the modes of transmission of COVID-19.
- Droplet Transmission: Occurs when a person is within 1 metre of the infector, who coughs or sneezes and so is exposing their mouth, nose or eyes to potentially infective respiratory droplets. Such droplets are >5-10 µm in diameter. Being heavy, the droplets fall to the floor soon.
- Airborne Transmission: It refers to transmission via aerosols (smaller droplets <5 µm) which can be transmitted to others over distances greater than 1 m. Aerosols may get released when infectors breathe heavily or talk, apart from coughing and sneezing. Aerosols contain fewer virus particles than larger droplets.
While the WHO has long held that the coronavirus is spread primarily by large respiratory droplets that, once expelled by infected people in coughs and sneezes, fall quickly to the floor, in an open letter to the World Health Organization (WHO), 239 scientists in 32 countries have outlined the evidence showing that smaller particles can infect people, and are suggesting a revision of its recommendations.
- If the airborne transmission is a significant factor, especially in crowded spaces with poor ventilation, the consequences for containment will be significant.
- Masks may be needed indoors, even in socially distant settings.
- Health care workers may need N95 masks that filter out even the smallest respiratory droplets as they care for coronavirus patients.
- Ultraviolet lights may be needed to kill viral particles floating in tiny droplets indoors.