When should an outbreak investigation use air sampling?

Unexplained hospital fungal infections

How do pollen grains contribute to allergies?

Contain allergens triggering immune response

Why is microbiological air sampling done in hospitals?

Investigate & prevent infections

High Aspergillus spore count—what action?

Increase ventilation, check reservoirs

What does aeromicrobiology study?

Airborne microorganisms & viruses

How to prevent airborne infections during renovations?

Monitor fungal spores & adjust controls

What is a challenge in microbiological air sampling?

Requires proper sampling design

What is the role of HEPA filters?

Remove airborne microbes & particles

How to determine if hospital ventilation spreads fungi?

Sample near vents & compare with outdoor air

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AIR MICROBIOLOGY_BEH

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Questions 20

Answers

1
When should an outbreak investigation use air sampling?
Unexplained hospital fungal infections
Nearby construction
Air filter needs cleaning
AC noise complaints
2
How do pollen grains contribute to allergies?
Carry bacteria & viruses
Contain allergens triggering immune response
React with pollutants
Reduce oxygen levels in air
3
Why prefer active air sampling over passive?
Passive captures more microbes
Collects more air faster
Needs no equipment
Passive is quicker
4
Why is microbiological air sampling done in hospitals?
Investigate & prevent infections
Replace ventilation with HEPA filters
Measure air temperature
To sterilize indoor air
5
High Aspergillus spore count—what action?
Spray disinfectant in air
Increase ventilation, check reservoirs
Change hospital temperature
Ignore unless symptoms appear
6
What does aeromicrobiology study?
Waterborne microorganisms
Microorganisms in the human body
Airborne microorganisms & viruses
Soil-dwelling microorganisms
7
Why do dust & droplets aid microbial transmission?
Reduce microbial concentration
Help microbes survive & move
Provide nutrients for microbes
Kill bacteria & fungi
8
Who introduced the term ‘allergy’ in 1906?
Robert Koch
Anton Van Pirquet
Louis Pasteur
Alexander Fleming
9
How to prevent airborne infections during renovations?
Increase patient density
Allow free movement of workers
Stop sampling until done
Monitor fungal spores & adjust controls
10
Best air sampling method for pharma storage?
None of the above
Passive surface air sampler
Sedimentation (settle plates)
Non-viable spore trap sampler
11
What is a challenge in microbiological air sampling?
It’s easy & cheap
Standardized protocols exist
Air is sterile
Requires proper sampling design
12
Which bacteria are resistant to drying?
Gram-negative & non-spore-forming
Gram-positive & spore-forming
Anaerobic bacteria
None of the above
13
Which is NOT a reason for air sampling?
Establish baseline air data
Evaluate infection control
Identify airborne allergens
Check for CO levels
14
Why is air a poor medium for microbial growth?
Contains harmful gases
Lacks nutrients & moisture
Contains too much oxygen
Has a high pH level
15
Which of the following is NOT a common airborne microorganism?
Fungi
Viruses
Bacteria
Protozoa
16
Which factor does NOT affect pollen presence?
Soil type
Wind
Water
Insects
17
Which air sampling method identifies bacteria & fungi?
Passive settle plates
Impingement in liquids
High-volume vacuum pump
Spore trap sampler
18
Best method to sample viable mold & bacteria?
Passive settle plates
Air sampling cassette
None of the above
Surface swab testing
19
What is the role of HEPA filters?
Remove airborne microbes & particles
Increase bacterial growth
Promote air circulation
Disinfect air by killing microbes
20
How to determine if hospital ventilation spreads fungi?
Collect random air samples
Ignore unless infection occurs
Sample near vents & compare with outdoor air
Test only surfaces for bacteria

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