Several people infected with Covid , after a bus travel

 

The use of face masks is considered very important to prevent the new corona virus and this precaution can greatly increase the risk of distance covid 19.

An example of this came in a medical study in China in which an infected person infected about two dozen other people during a bus journey.

The incident took place in Ningbo, China, in January, and researchers discovered that several people became infected with the virus even when they were not sitting close to each other, adding to the evidence that the disease could be spread through the air. Is.

The study, published in the medical journal JAMA Internal Medicine, examined the risk of spreading the corona virus through the air.

To that end, passengers who were part of a 50-minute bus journey to Ningbo in January were scrutinized when they left at a time when the use of face masks was not common.

Researchers believe the infected person on the bus may have been in contact with the people of Wuhan, where the virus began to spread.

The researchers did not provide details about the victim and mapped the inside of the bus to find out where the other passengers were sitting, with 23 of the 68 people diagnosed after code 19.

They discovered that the victims were sitting in the front and back of the bus, one to two meters away from each other, a distance that authorities and experts say is important for protection from infectious particles.

The victim, who was traveling in the bus, did not have a cough like the symptoms of code 19 and was returning from a religious ceremony.

The researchers also found that the air conditioning system inside the bus was circulating air, which may have contributed to the spread of the virus.

He said research suggests that air circulation in tight environments makes the new corona virus more contagious.

He said the results also indicated a possible transmission of the virus from the air, which is important for public health.

The study identified a diagram of each infected person, which increases the evidence of airborne virus transmission, while also pointing to a study that showed how a restaurant in Guangzhou The virus spread to different people as a result of AC.

Earlier last month, a study by the University of California, Berkeley, found that the corona virus, which causes code 19, can travel up to 5 meters in the air.

The study found that tiny particles emitted from a mouth or nose full of code 19 can stay in the air for a long time and can make more people sick during that time.

It should be noted that since the onset of the Corona virus epidemic, the WHO has taken the position that the virus can only be spread through particles emitted from the mouth or nose, which can be as large as human hair, but this aerosol Or they are bigger and heavier than very small particles floating in the air.

However, for the first time in July, the World Health Organization acknowledged that the new corona virus could spread through the air in a room with poor air quality and reach people more than 6 feet away.

The International Atomic Energy Agency (IAEA) has said there is no evidence outside hospitals that the Novel Corona virus can swim long distances or travel long distances, meaning it is safe to walk a few feet away from other people. This is considered an important precaution.