Bioaerosols are a loosely defined group of airborne particles of biological origin, generally including bacteria, fungi, and viruses, as well as pollen, their fragments, and various antigens. They can cause many adverse health effects, including allergic, toxic, and infection responses. Exposure to bioaerosols may be especially hazardous in clinics and hospitals. In addition to SARS-CoV2 and influenzas virus, some bacteria such as Streptococcus pyogenes, Neisseria meningitidis, Corynebacterium diphtheria, and Mycobacterium tuberculosis are known to be transmitted predominantly by airborne droplets from infected people, and they may cause nosocomial infections such as surgical site infections, and respiratory and urinary tract infections.
Disinfectant spray-fog techniques for antimicrobial control in hospital rooms has been used. This technique of spraying of disinfectants is an unsatisfactory method of decontaminating air and surfaces and is not recommended for general infection control in routine patient-care areas386. Disinfectant fogging is rarely, if ever, used in U.S. healthcare facilities for air and surface disinfection in patient-care areas. Methods (e.g., filtration, ultraviolet germicidal irradiation, chlorine dioxide) to reduce air contamination in the healthcare setting are discussed in another guideline
There are several standards for optimum air filtration and purification published by the International Organisation for Standardisation (ISO), outlining unacceptable ranges of particulate sizes. One of the standards is ISO 14ISO8573-1:2010.
Monday, Jan 3, 2022
Refrences
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Decontamination of wastes and waste-contaminated materials
Microbial Contamination of Disinfectants
