- The World Health Organization said a few weeks ago that the spread of coronavirus aerosols was a real risk when more than 200 researchers called on the WHO to recognize the problem. However, the organization says droplet transmission is a major mode of COVID-19 transmission.
- A new study looked at how the COVID-19 moved in the closed environment of the cruise ship Diamond Princess, which was quarantined in Japan in early February, and found that aerosol delivery could be a worse phenomenon than we thought.
- The study follows other studies that have shown that the virus can infect cells from aerosols and that have shown that taller people are twice as likely to be infected.
The cruise ship Diamond Princess became popular around the world in early February, when the Japanese authorities quarantined a boat in the port of Yokohama for COVID-19 infection. Finally, 712 of the 3,711 passengers and crew members tested positive, and 14 died by the time the Diamond Princess was blocked. The vessel was the subject of some research, believing that it offered researchers a unique picture of the behavior of the virus in a population that had been kept on board for several weeks.
Recent research may suggest that one of the worst things about the new coronavirus should be of great concern to authorities seeking to curb COVID-19 outbreaks. This is aerosol transfer, a topic that is increasingly appearing on COVID-19. The World Health Organization (WHO) recognized the risk of COVID-19 in the air a few weeks ago, but still said that larger drops of saliva, which are released when speaking, sneezing and coughing, are the main way the virus spreads. A new study by Diamond Princess says it can estimate the amount of aerosols inside a cruise ship.
Researchers have recently shown that a virus that can float in aerosols can multiply when it reaches cells. This was an indication that the virus could survive in the air in those microdisks that become aerosols when water evaporates and floats longer than larger saliva droplets that can land on surfaces and in humans. A different study suggested another unexpected conclusion. People 6 feet tall are twice as likely to be infected with the new coronavirus, and airborne transmission is the only mode of transmission that can confirm this finding.
Researchers at Harvard and the Illinois Institute of Technology have combined a study that attempted to model COVID-19 transmission models on board and concluded that aerosol transmission plays an important role in the Diamond Princess coronavirus epidemic. The study was not reviewed, but it was published online medRxiv, per The New York Times.
The researchers conducted more than 20,000 simulations that took into account various features of the COVID-19 outbreak of the Diamond Princess, including social interaction models, the time the virus can live on surfaces, the size of particles expelled from the human mouth, and their behavior in air.
More than 130 simulations yielded results similar to what happened on a real ship. The researchers examined the “most realistic” scenarios to calculate the importance of different ways of transmitting the virus. They concluded that the spread of the virus on a cruise ship is dominated by smaller droplets, causing 60% of new infections both near and far. The transmission of Fomite or the entry of the virus onto the same surfaces played a smaller role.
“A lot of people said airborne traffic was happening, but no one had it,” said Dr. Parham Azimi of Harvard’s TH Chan School of Public Health. “What is the contribution of these small droplets – is it 5 percent or 90 percent? In this paper, we provide the first real estimates of what this number could be, at least for this cruise ship. “
To date, researchers have proven that aerosol transmission is a real thing in infectious diseases, including COVID-19, that the load of aerosol viruses is contagious, and that the spread of aerosols may have been a major factor in the Diamond Princess outbreak. More research needs to be done and research should be properly evaluated by other experts.
Individual studies have shown that face masks can reduce the permeability of droplets and aerosols, whether they are surgical masks or multi-layered home tissue coatings. It is not clear how much virus would be enough to infect a person. But aerosols could help the pathogen get into the lower respiratory tract faster than droplets. In the lungs, the virus can multiply catastrophically and cause several life-threatening complications.
Researchers believe the Diamond Princess transfer study could help officials develop new tools that can be adapted to internal conditions, such as at school. Professor Brent Stephens of the Illinois Institute of Technology in Chicago says the simplest thing is to “really pursue a mask policy.” Appropriate masks should also be used to reduce dispersion through aerosols.
Ventilation may need to be replaced to improve indoor safety. The diamond princess did not circulate air and was well ventilated, but this did not stop the spread of the virus.
Not all scientists agree that aerosol delivery may be the main engine for the spread of COVID-19, and Times’ To find out more opinions on the subject, it is worth reading the information. But even if the spread of aerosols is only a minimal risk, health officials should consider measures to reduce this pathway.