Air microflora play a significant role despite low numbers compared to other environments. This is because air is in constant contact with animate and inanimate objects, allowing it to transmit infectious agents. While most airborne microbes are harmless, pathogens can cause infections if inhaled in high concentrations. In hospitals, airborne transmission of nosocomial pathogens like Staphylococcus and Streptococcus can lead to infections, especially through talking, coughing, or contact with contaminated surfaces. Strict sterility is also needed in food industries to prevent microbial spoilage from airborne contamination.

1. SIGNIFICANCE OF AIR
MICROFLORA
I PG MICROBIOLOGY
SRCW

2. Significance of Air Microflora
•Although, when compared with the
microorganisms of other environments,
air microflora are very low in number,
they playa very significant role.
•This is due to the fact that the air is in
contact with almost all animate and
inanimate objects.

3. Significance
of
Air
Microflora

4. Significance of Air Microflora
Lazzaro
Spallanzani
1799

5. Significance
of
Air
Microflora

6. Air Microflora Significance in Human
Health -
• The significance of air microflora in human health relies on
the fact that air acts as a medium for the transmission of
infectious agents.
• An adult man inhales about '5m3
of air per day.
• Although most of the microorganisms present in air are
harmless saprophytes and commensals, less than I % of the
airborne bacteria are pathogens.
• Even though the contamination level is very low, the
probability of a person becoming infected will be greatest if
he is exposed to a high concentration of airborne pathogens.

7. CARRIERS
WITH
SYMPTOMS
WITHOUT
SYMPTOMS Staphylococcus aureus
Significance in Human Health

8. DISPERSION OF
AIR
OUTDOOR
CHANCE OF
CAUSING
INFECTIONS
LOW
INDOOR
CHANCE OF
CAUSING
INFECTIONS
HIGH
Significance
in
Human
Health

9. Air Microflora Significance in Hospitals
NOSOCOMIAL
INFECTIONS
NOSOCOMIAL
PATHOGENS
Haemophilus influenza
Streptococcus pnemoniae
Staphylococcus
Klebseilla
Enterobacters

10. NOSOCOMIAL
INFECTIONS
DIRECT
TALKING
COUGHING
SNEEZING
SKIN SCALES
INDIRECT
FOMITIES
Air Microflora Significance in Hospitals

11. Significance of Microorganisms in
Industries
FOOD
MANUFACTURE
MICROBES
SETTLE ON THE
PRODUCTS IN
FOOD
INDUSTRY
CAUSE
SPOILAGE OF
FOOD
REQUIREMENT
OF STERILE
ENVIRONMENT

12. Significance of Microorganisms in
Industries

13. Significance of Microorganisms in
Industries

14. Significance of Microorganisms in
Industries