COVID-19 is a respiratory disease that transmits through the air when a person is exposed to respiratory droplets
carrying the infectious virus and, as such, one of the best ways to control its spread is social distancing. However, in
small and enclosed spaces where that is not possible, like elevators or public washrooms, other strategies should be
applied instead. In that regard, the best way to prevent the spread of COVID-19 in small and enclosed spaces is to
disinfect and sanitize these environments properly and frequently.
One of the main aspects that make small and enclosed spaces so risky is poor ventilation, which means that fresh air
can’t flow freely inside and most of the air becomes stale. Improving ventilation by simply opening windows and doors
whenever possible is then necessary as a first step to prevent the spread of diseases and disinfect in these spaces. If it is
not possible, the use of facemasks should be mandatory for all people coming inside the space, and communication
about the importance of physical distancing and hand hygiene should be reinforced.
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Ventilation can be also achieved with certain equipment like air filters, air conditioners, and even fans. Doing it this way
won’t give you the same benefits as natural ventilation, which is providing healthy air for people to breathe by diluting
and removing pollutants and contaminants from the space itself. Nonetheless, artificial ventilation can help reduce the
spread of COVID-19 in indoor spaces by increasing the rate of air change and decreasing recirculation, and as well as
reducing pockets of stagnant air in an enclosed space.
One of the downsides of artificial ventilation is the fact that even though it minimizes the duration of people’s exposure
to any potentially infectious droplets produced by a cough or sneeze in the space; air blowing from an infected person
to another in an enclos