Question

Covid 19 is spread through ?

Answer 1

Answer :

COVID-19 spreads between the people through direct or indirect contact by droplet or aerosols, airborne transmission and surface transmission. Direct contact through close contact with infected people via mouth and nose secretions include saliva, respiratory secretions or secretion droplets.

1. Droplets or aerosols. When an infected person coughs, sneezes, or talks, droplets or tiny particles called aerosols that are able to stay suspended in the air for longer periods of time, carry the virus into the air from their nose or mouth. Anyone who is within 6 feet distance of that person get infected through droplets get in to the mouth, nose or eyes .Strong airflow could have propagate aerosols at a long distance. Large respiratory droplet can travel only a short distance through air..
2. Airborne transmission.  Airborne transmission is the spread of an infectious agent caused by the dissemination of droplet nuclei that remain infectious when suspended in air over long distances and time. The virus can survive in the air for up to 3 hours in some special circumstances. It transmit into the lungs if an infected person cough, sneeze or exhale air out and someone inhale the same air.In hospital atmosphere airborne transmission may occour in specific circumstances and settings in which procedures or support treatments that generate aerosols (ie endotrachel intubation, open suctioning, nebulization, bronchoscopy etc.)
3. Surface transmission. People with the virus in their noses and throats may leave infected droplets on objects and surfaces when they sneeze, cough on, or touch surfaces, such as tables, doorknobs and handrails, computer mouse, medical equipments, cellular phones, toilet, room surface and floor etc . Other people may become infected by touching these objects or surfaces, then touching their eyes, noses or mouths before cleaning their hands. These virus can survive on surfaces for several days as per the characteristics of the surface.