At present, in addition to social distancing, wearing masks and other epidemic prevention measures, the most common disinfection methods are the use of alcohol to disinfect hands in public, and chemical sterilization methods such as bleaching the environment. However, Dr. Zhu Jiming mentioned that alcohol and bleach disinfection still have limitations in epidemic prevention. First of all, the two can only immediately disinfect the bacteria and viruses attached to the hands and items. If the hands touch other places after cleaning, there is still the possibility of being exposed to germs. Second, wiping with alcohol and bleach can only disinfect the surface of objects, and it is difficult to exert an inhibitory effect on viruses that are transmitted through droplets and aerosols and float in the air.
In addition, if the bleach is company banner design used up within 24 hours after dilution, the sterilization effect will be reduced if it is stored for too long. Alcohol is not effective against all viruses, such as viruses without a mantle, such as: enterovirus, norovirus, rotavirus, staphylococcus aureus, legionella, there is no way to kill effectively, it is also worth noting one ring. UVD_Picture 3 Disinfection with alcohol and bleach still has its limitations (Photo Credit: The News Lens Brand Studio) To avoid nosocomial infections and cluster events, chemical + physical disinfection needs to be used alternately Therefore, Dr. Zhu Jiming said that from an epidemiological point of view, in order to reduce the occurrence of nosocomial infections, epidemic prevention hotels, and cluster events in large institutions, it is recommended that in addition to chemical disinfection methods such as alcohol and bleach wiping, physical disinfection methods can also be added. It is better to use it interactively.
al disinfection methods include opening windows for ventilation, boiling, high-temperature steam, dry-heat sterilization, and far-infrared and UV light disinfection. Among them, UV light and far-infrared disinfection use ultraviolet and far-infrared lamps to penetrate the cell membrane and cell wall of the bacteria through light, destroy the genetic material of the bacteria, and make it inactive, thereby weakening the spread and reproduction of the bacteria. Among them, the low intensity of far-infrared rays requires long-term irradiation to achieve the sterilization effect.