So the recommendation is to wear a mask, fix the ventilation properly, don’t be too crowded
Jakarta (ANTARA) – Recently, the United States Centers for Disease Prevention (CDC) stated that the virus that causes COVID-19 can spread in the air from an infected person up to 1.8 meters away in a closed room.
“There is indeed potential in a closed room. Previously the WHO (World Health Organization) had said that at the urging of 239 scientists, it is clear the potential for transmission in a closed room. In closed rooms, people are crowded, they don’t wear masks,” said a clinical practitioner as well as a volunteer for COVID-19, dr. Muhamad Fajri Adda’i told ANTARA on Wednesday.
The case of the choir members in Skagit County, Washington, United States on March 17 can be an example. Local health authorities reported that as many as 61 members met in a room on March 10 for 2.5 hours of choir practice.
At that time, it turned out that one person was positive for COVID-19 but had no symptoms. Finally, after training, a total of 32 people tested positive for COVID-19 and 20 others had the chance to develop symptoms of COVID-19, while eight others were negative for COVID-19.
Referring to this case, COVID-19 spreads in crowding people, does not maintain a two meter distance and wear masks when among other people.
Another example is the case of visitors at Starbucks Paju, South Korea some time ago. At that time, there were 56 customers affected by COVID-19, but four employees there were negative.
After tracing it, it turned out that most of the customers there were not wearing masks and the air circulation there was poor. While employees who were negative for COVID-19, at that time, were working wearing masks.
According to the CDC, exposure to respiratory droplets containing the SARS-CoV-2 virus can consist of smaller droplets and particles that can remain suspended in the air for a distance of more than two meters and can last for hours.
Based on this, Fajri said, there is indeed a possibility that COVID-19 can spread through droplets and particles in the air that are formed when someone with COVID-19 coughs, sneezes, sings, talks, or breathes. However, in general, a room without proper ventilation increases the risk of such cases.
“That’s why the recommendation is to wear a mask, correct the ventilation, don’t be too crowded (people in the room), if in a small room don’t talk too much,” said Fajri.
According to him, the main transmission of the virus is still through droplets or particles released when someone sneezes, coughs, talks or even breathes.
When someone who is positive for COVID-19 comes into close contact with another person within a distance of about six feet or two meters, the particles he emits can be inhaled into the nose, mouth, airways and lungs and cause infection in those around them.
Drops can also fall on surfaces and objects and move through touch. When someone touches a surface with the virus that causes COVID-19 and then touches their own mouth, nose, or eyes, they can catch COVID-19.
Then what is the current doctor’s recommendation?
Fajri, referring to the journal Infectious Diseases Society of America (IDSA) last July regarding the potential for transmission of the SARS CoV-2 virus in a closed room, recommended the availability of effective and efficient ventilation to minimize air recirculation. The recommendations are aimed primarily at buildings or offices, schools, hospitals and nursing homes.
In addition, there needs to be an additional high efficiency air filtration device and a UV light in a room.
How about keeping a distance of two meters? Health expert who is a specialist in heart and blood vessels, dr. Vito A. Damay said this distance is still relevant for reducing the risk of infection, because not all saliva splashes can last that far in the air.
“But again there is a possibility that in a place where the air circulation is not good and the drooling is very fine, it will last longer to float in the air and can be inhaled by other people,” he said.
The same thing was expressed by Fajri. According to him, the implementation of maintaining a distance of two meters is no longer relevant when in a closed room, especially if the people there do not wear masks or when they are talking a lot without masks.
“That’s why I always suggest, there are conditions when we can’t keep our distance,” he said.
He added, “The concept is that people understand not only to keep their distance but to wear the main mask. For example, on a train or bus, people are not always able to keep a distance of two meters, but if they are silent and wear a mask, how can they infect, there is little risk. lots of droplets released. “
Vito reminded the importance of wearing masks, especially when it is difficult to apply rules for maintaining distance, for example on public transportation.
“If you wear a mask with three layers of cloth, let alone a surgical mask, you will definitely still sneeze in the saliva mask. If we are healthy and wear a mask, the chances of breathing air that contain saliva particles and viruses are smaller,” he said.
By Lia Wanadriani Santosa
Editor: Alviansyah Pasaribu
COPYRIGHT © BETWEEN 2020