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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
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Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
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Microorganisms are routinely cultured in the laboratory using various techniques to isolate, grow, and quantify them for further study. These methods rely on inoculating microorganisms into a suitable growth medium under aseptic conditions to prevent contamination. Depending on the objective, inoculation can involve direct transfer or the use of diluted bacterial suspensions as the inoculum.Streak-Plate Method for IsolationThe streak-plate method is a common technique for obtaining pure...
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Updated: May 5, 2026

Detection of Viruses from Bioaerosols Using Anion Exchange Resin
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Microculture method for some viable airborne particles.

C Benaim

    The Journal of Allergy and Clinical Immunology
    |March 1, 1975
    PubMed
    Summary

    A novel microchamber enables in situ culture and direct observation of airborne particles. This method improves the efficiency of air sampling and allows rapid differentiation between living and nonliving microscopic particles.

    Area of Science:

    • Environmental science
    • Microbiology
    • Analytical chemistry

    Background:

    • Airborne particles pose risks to health and the environment.
    • Current methods for analyzing airborne particles can be time-consuming and lack in situ capabilities.
    • Distinguishing between viable and non-viable airborne particles is crucial for exposure assessment.

    Purpose of the Study:

    • To develop and validate a microchamber for the in situ culture and analysis of airborne particles.
    • To enable direct microscopic observation and photography of collected airborne particles.
    • To enhance the efficiency and accuracy of airborne particle sampling and characterization.

    Main Methods:

    • Development of a specialized microchamber compatible with Rotorod Air Sampler "I" rods.

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  • Implementation of in situ culture techniques within the microchamber.
  • Utilizing microscopy for direct observation and photography of airborne particles.
  • Assessing the chamber's efficiency in particle collection and differentiation.

    • Main Results:

    • The microchamber facilitates direct, real-time observation of airborne particles.
    • Successful in situ culture of airborne particles was achieved within the chamber.
    • Rapid distinction between living and nonliving airborne matter was demonstrated.
    • Increased efficiency in airborne particle sampling was observed using the developed microchamber.

    Conclusions:

    • The developed microchamber is an effective tool for in situ analysis of airborne particles.
    • This technology improves airborne particle sampling efficiency and characterization.
    • The microchamber allows for rapid differentiation of biological and non-biological airborne matter.