Coronovirus aerosol transmission may be worse than we think – BGR


  • The World Health Organization said a few weeks ago that more than 200 researchers have urged WHO to accept the issue. But the organization maintains that droplet transmission is the primary way COVID-19 spreads.
  • A new study looked at how COVID-19 went inside the closed atmosphere of the abandoned Diamond Princess cruise ship in Japan in early February, finding that aerosol transmission could be a worse event than we thought.
  • Research follows other studies that have proven viruses with aerosols can infect cells, and shows that tall people are twice as likely to be infected.

The Diamond Princess cruise ship gained worldwide notoriety in early February when Japanese officials discovered the boat at the Port of Yokohama to witness the COVID-19 transition aboard the vessel. Eventually, out of 3,711 passengers and crew on board, 712 tested positive and 14 died by the time the Diamond Princess docked. The ship has been the subject of some studies, noting that it offers researchers a unique view of the behavior of the virus inside a population that was confined to the ship for several weeks.

The latest research can prove that one of the worst things about novel coronoviruses should be a genuine concern for officials watching the outbreak of COVID-19. This is aerosol transmission, a subject that is more and more frequent in COVID-19. The World Health Organization (WHO) acknowledged the risk of air-spread COVID-19 a few weeks ago, but still maintained that large salivary droplets that are extracted during talking, sneezing, and coughing, The virus is the primary method of spreading. The new Diamond Princess study states that it can determine aerosol transmission inside a cruise ship.

Researchers have recently proved that viruses floating in aerosols can replicate after reaching cells. This was an indication that the virus could survive in those microdroplets in the air that became aerosols after water evaporation, and floated longer than large salivary droplets that could land on surfaces and people. A separate study proposed another unexpected conclusion. Those who are 6 feet tall are two times more likely to be infected with novel coronaviruses, and aerial spread is the only type of transmission that can support the discovery.

Researchers at Harvard and the Illinois Institute of Technology teamed up for a study that attempted to model the transmission model of the onboard COVID-19 and concluded that aerosol transmission played a significant role in the Diamond Princess Coronavi epidemic. The study has not been peer-reviewed, but has been published online medRxiv, Via new York Times.

The researchers ran more than 20,000 simulations, taking into account the various features of the Diamond Princess COVID-19 outbreak, including patterns of social interactions, the length of time the virus lived on its surfaces, the size of particles ejected from a person’s mouth, and their Behavior in the air.

More than 130 simulations gave results of what happened in real life aboard the ship. Researchers looked at the most “realistic” scenarios to calculate the importance of various methods of viral transmission. They concluded that the small drops were mainly responsible for the spread of the virus on the cruise ship, accounting for 60% of new infections at both close range and over distances. The transmission of the virus by touching the same surface, or receiving the virus, plays a smaller role.

“Many people have argued that air is broadcasting,” said Dr. Param Azmi, Harvard’s TH Chan School of Public Health, but no one had a number for it. “” What is the contribution from these small drops – is it 5 percent, or 90 percent? In this paper, we provide the first real estimate, at least in terms of this cruise ship, at least what It is possible. “

Until now, researchers have proved that aerosol transmission is a real thing for infectious disease, including COVID-19, an aerosol viral load contagious, and that aerosol proliferation may be the main driver of the Diamond Princess outbreak. More research is required, and the study should receive appropriate reviews from other experts.

Separate research has shown that face masks can reduce drops and aerosol transmission, whether it is a surgical mask or a multilevel homemade cloth cover. It is not clear what the amount of virus will be to infect a person. But aerosols can help reach the lower airways faster than pathogens. It is in the lungs where the virus can multiply at a disastrous pace and cause many life-threatening complications.

Researchers believe that the Diamond Princess Transmission Study can help authorities shape new measures that can be implemented in indoor conditions, like school. According to the Illinois Institute of Technology at Chicago Professor Brent Stephens has the simplest “actually enforcing mask policies”. Appropriate masks should also be used to reduce diffusion through aerosols.

Changes in ventilation may also be required to improve the safety of indoor spaces. The Diamond Princess did not reassemble the air and was well ventilated, but it did not stop the virus from spreading.

Not all scientists agree that aerosol transmission may be the primary driver of COVID-19 propagation, and Time’ The coverage is worth a read for more opinions on the matter. But even though aerosol spreads are a minimal risk, health authorities should consider measures to reduce this avenue of transmission.

Chris Smith started writing about gadgets as a hobby, and before he knew it he was sharing his thoughts on tech stuff with readers around the world. Whenever he is not writing about gadgets, he badly fails to stay away from them, though he tries his best. But that is not necessarily a bad thing.

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