Chinese scientists’ study of air samples from hospital wards showed that a coronavirus could spread four meters away from a patient. This is twice as much as the social distance that many people have to stay with in public in many countries.
Researchers from the Academy of Military Medical Sciences in Beijing checked the samples from the Surface and Air Unit of the Intensive Care Unit and the General Department of COVID-19 at Huosheng Hospital in Wuhan. From February 19 to March 2, there were 24 patients in total. Scientists have found that the virus was most concentrated on the floor of the compartments – under the influence of gravity and air flows, most of the droplets with the virus settled on the ground. High levels of contamination have also been found on commonly touched surfaces such as computer mice, trash cans, handrails and door handles. In addition, half of the samples from the soles of the shoes of the nursing staff of the intensive care unit showed a positive result for the coronavirus. Thus, the soles of the shoes of the medical staff can also function as carriers.
A team of scientists also investigated the so-called aerosol transmission – when virus droplets are so small, they hang and stay in the air for hours, unlike cough drops or sneezes that fall to the ground within seconds. They found that viral aerosols mostly concentrated near and below the level of patients up to 13 feet (4 meters) away. Above, at the level of the patient’s head, the virus spreads by 8 feet (about 2.5 m). Researchers indicate that small amounts of the virus are detected over long distances, which are not necessarily contagious. However, scientists believe that the World Health Organization is still reducing the risk of coronavirus, and the results of their study cast doubt on common rules to fight the disease: “Our results show that home isolation of people with suspected COVID-19 may not be a good control strategy given the prevalence of the virus in the environment.”
US health officials have taken a more cautious stance on this issue than WHO and urged people to cover their faces in public in case the virus can actually be transmitted in normal breathing and in speech.
Recall, in a study of American scientists, the results of which were reported in the White House by epidemiologist Harvey Feinber, confirmed that the coronavirus can be transmitted from a sick person not only during sneezing or coughing, but also during conversation, and even during breathing.
Earlier, the US Centers for Disease Control and Prevention stated that the virus spreads from person to person because of the small droplets that form when the infected person coughs or sneezes.
US President Donald Trump said federal rules for social distance through the coronavirus could be tightened and restrictions on travel to China and Europe would remain in place.
And Los Angeles resident (USA, California) Eduardo Moreno tried to break through a locomotive floating hospital USNC Mercy, which was infected with a coronavirus.