The hospital environment, especially the surface of objects, is a huge reservoir of bacteria. There are a variety of bacteria, fungi, viruses, chlamydia, and other microorganisms on the surface of objects.
Many microorganisms can survive on the surface for a long time, such as Clostridium difficile spores can survive on the dry surface for 4-5 months or more, and norovirus can survive for more than 1 week. CDC of the United States believes that direct contact between people or indirect transmission through contaminated object surfaces is one of the main ways of pathogen transmission. Pathogenic microorganisms on the surface of objects frequently contacted by patients in the nearby diagnosis and treatment area can be directly or indirectly transmitted in the hospital through the hands of medical staff.
Although the surface of the object only involves the direct transmission of infection to patients, there are good reasons to believe that it plays an important indirect role in the acquisition of pathogenic bacteria in hospitals, the contamination of medical personnel and medical equipment. Therefore, surface disinfection of objects is very important in the control of hospital infection.
Surface disinfection can reduce the load level of pathogenic microorganisms. If the disinfectant is used properly, the microbial load will be significantly reduced after disinfection, and the contaminated pathogenic microorganisms and multidrug-resistant bacteria can be killed or removed.
Surface disinfection can block the spread of pathogenic microorganisms and control the outbreak of infectious diseases and hospital infections. Studies have shown that improving the cleanliness and disinfection of the surface of environmental objects plays an important role in controlling the outbreak of nosocomial infection.
There is also clear evidence that surface disinfection is helpful to control the outbreak of nosocomial infection.