Call us for Counseling - 9580048004, For Support - 8860807050.  

Tags Current Affairs

Role of ventilation in preventing Covid-19 transmission

Date: 02 July 2021 Tags: Miscellaneous


Covid-19 infection has been spreading due to people's interaction. The role of ventilation in preventing spread is currently being studied.



Covid-19 is a respiratory illness. It spread through breathing. The flow of air in indoor settings must be taken care.



  • Droplets are emitted by infected individuals when they laugh, speak, cough, sneeze etc. The size of droplets may vary significantly.

  • Droplets of larger size may fall within a short time but aerosol particles stay for long and can also travel over longer distances.

  • Masks are the primary weapon against such droplets as they trap them and not allow them to infect the wearer.

  • Infection chances get reduced substantially if there is continuous flow of air. Normal winds can disperse pathogens from a given place.

  • Large gathering of people in a congested manner makes outdoor settings vulnerable for people as people are in closer proximity.

  • There should be minimum time spent in such settings. For that purpose, double masking should be adopted.


Threats due to indoor settings

  • Studies have shown that even a short conversation without masks can make an individual vulnerable.

  • The greater the number of people in the room, longer the time spent in the room and low level of ventilation makes such a setting a perfect recipe for infection.


Increasing ventilation

  • Major aspect should be increasing air flow in a given room. This can be through exhaust fans or pedestal fans near windows.

  • Ceiling fans only circulate the existing air in the room but do not add fresh ones. It cannot help in bringing fresh air.

  • Use of air conditioning should be avoided. It may be better to keep the windows and doors open for airflow.

Notice (8): Undefined variable: quizpole [ROOT/plugins/Studyiq/src/Template/Pages/tagdetails.ctp, line 161]