As of 24:00 on December 12, Lhasa City had no new confirmed or suspected cases for 683 consecutive days. Faced with the repeated global COVID-19 epidemic and the spread of domestic epidemics in many places, how did Lhasa maintain good results in epidemic prevention and control? Is it because of special geographical environmental factors such as high plateau altitude and strong ultraviolet rays? Or is it due to scientific prevention and control measures? On this issue, the reporter consulted and understood the experts in detail.
The statement that "high altitude and strong ultraviolet rays can block the new coronavirus" has no scientific basis and is unreliable.
Deputy Director of the Infectious Disease Institute of the Autonomous Region Center for Disease Control and Prevention told reporters: "The medical teams and experts in relevant fields have not done medical research in this area, and there is no relevant data to support this statement. Sun ultraviolet rays have a certain disinfection effect on viruses and bacteria, but it takes a certain amount of time. There is no science to completely kill them. Based on it. "
Experts believe that ultraviolet rays are an important part of solar radiation, which not only destructive effects on bacteria, but also destructive effects on certain viruses. However, for the new coronavirus, the ultraviolet rays of the sun cannot achieve the effect of killing the virus, and the solar radiation cannot reach the temperature of killing the virus.
" The "New Coronavirus Pneumonia Prevention and Control Plan (Eighth Edition)" issued in 2021 points out that the new coronavirus is sensitive to heat and ultraviolet rays. The sterilization and disinfection we usually use are short-wave ultraviolet rays. Since short-wave ultraviolet rays are almost completely absorbed by the ozone layer, there is no scientific basis for the Tibet Plateau to kill the new coronavirus by basking in the sun." said Liang Sufang, deputy chief physician of the Lhasa Center for Disease Control and Prevention.
In addition, it is worth mentioning that the infection of the new coronavirus will affect lung function, which will lead to hypoxia to a certain extent, causing symptoms such as pulmonary edema and cerebral edema. In winter, Tibet has thin air and oxygen content of only about 60% of that of the plain. It is difficult for the human body's blood oxygen saturation to reach the normal level of the plain. After the cases of new coronary pneumonia occur on the plateau, it is more likely to turn into severe illness and even life-threatening.
At present, the prevention and control of the pneumonia epidemic caused by the new coronavirus is in a critical period. While doing a good job in personal protection, the general public should also maintain rationality, respect science, and let science and authority become the "shrinkers" of rumors, and do not believe in rumors or spread rumors.
