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Aeromicrobiology is the study of microorganisms living in the air and transported through the air. It is particularly important when aerosols are formed, drying of soils takes place and wind suspension and dust storms pick up microbial load and above all the strategies of biological warfare that are always hanging over today’s world.

Air borne microorganisms become an important sources of contamination in laboratories, hospitals, industries, exposed food materials, drinks and fodder. Although the air is nota medium for growth of microorganisms yet it carries particulate matter, dust and droplets which generally remain ladden with microorganisms. This type of carriers transport microorganisms and the ultimate fate of these microorganisms is dependent on conditions like sunlight, temperature, humidity, size of microbe laden particles, degree of susceptibility or resistance of particular microbe in new physical environment. Microbes come down with rains. The air after heavy rain is to a great extent free from microorganisms.

The term aerobiology has remained more popular than aeromicrobiology and there are a large number of associations and aerobiology research laboratories specializing in aeroallergen research, pollen grains and fungal spore identification. Of course, the study of other spores as that of algal, bryophytes and pteridophytes are also studied under aerobiology.

To conclude, the aeromicrobiology is the study of those invisible microorganisms which are less than size of 1 mm and not visible with naked eye which are present in the air.

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