Bacterial dust

Bacterial dust (more correctly - microbial dust). Dust particles often carry the microorganisms. In cases where these are pathogenic microorganisms, bacterial penetration of dust can cause disease (airborne infection). Infection can also occur by ingestion of such particles on the wound surface.
A significant number of dust particles suspended in the air (1-5 MK), may long to be there and to achieve with jet inhaled air terminal bronchioles, and possibly the alveoli. In dust may exist even such labile microorganisms, as the flu virus. The possibility of infection by dust particles, bearing pathogens is proved for tuberculosis, anthrax, brucellosis, q-fever, tularemia, diphtheria and other
Origin bacterial dust can be soil, household or industrial.
With particles of soil dust associated infection of air microbes. Epidemiology. The value of soil dust of origin is small. However, under certain conditions, the soil may be contaminated with pathogenic microorganisms, then with soil P. may be linked with the development of outbreaks of disease among the people (for example, q-fever, brucellosis, typhoid fever). I believe that the soil P. is of great importance in the spread of pathogens deep mycosis, in particular histoplasmosis and coccidioidomycosis.
The source of contamination of household dust pathogenic microorganisms is sick or ballonhotel, domestic animals and birds. By speaking, sneezing, coughing throw into the air a huge number of droplets containing microorganisms. The largest of them are connected with particles P., quickly settle and dry up, forming a bacterial P. Drops smaller sizes part settle, part of the same dry suspended and, settling into bacterial dust.
Convection currents of air, cleaning, active movement of people translate bacterial dust in Aero-state (dust phase of aerosol). This makes reinfection of air, which can lead to infection of people in the absence of the patient, which were the source of infection.
In some cases, epidemiological significance has bacterial P. resulting from industrial activity. Marked flash pulmonary forms of anthrax on sherstoboeva factories, tularemia during harvest bread from ricks infected secretions of patients rodents, and other
Pathogens can survive and virulence in particles P. a very long time (hemolytic Streptococcus - 2-3 months, brutally - from 20 to 70 days, wand TB - up to a year).
For bacterial dust use mechanical methods (ventilation and fixing P.), disinfection with bactericidal substances and ultraviolet radiation. While the microorganisms present in the dried state and fixed on the dust particles, relatively resistant to the adverse effects of chemical and physical factors. Therefore, the use of microbicides in the form of aerosols and UV radiation may not produce the same effect is achieved when exposed to microorganisms suspended in the air in isolation from dust particles. However arranged properly ventilation provides a sharp decrease in the concentration of particles bacterial hummed in the air and reduces the risk of infection. In some cases, when you want to reduce pollution to a minimum (operating, hospitals and so on), to combat bacterial dust recommend plasmapause funds (the simplest of them is spun oil), applied to the floor. Effective water solutions bactericidal substances for cleaning floor and wall add to them plasmadynamic funds. The bacterial dust should not be limited only to activities aimed at the removal, handling and disposal of already formed particles; it begins with measures that block the sources of education P. indoors (filtering supplied by air ventilation, dust removal linen, clothes, soft inventory in special conditions - impregnation their plasmapause means).