Modified Moore Swab
Modified Moore Swab - Related Videos
10:03
Swab Sampling Method for the Detection of Human Norovirus on Surfaces
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Cited by 40 •
2017
A macrofoam based sampling methodology was developed and evaluated for the detection and quantification of norovirus on environmental hard surfaces.
02:34
Quantification of Group B Streptococcus Load in the Mouse Vaginal Lumen via Swabbing and Chromogenic Culture
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2026
Source: Patras, K. A. & Doran, K. S. A Murine Model of Group B Streptococcus Vaginal Colonization. J. Vis. Exp. (2016)This video demonstrates the quantification of vaginal Group B Streptococcus (GBS) load in a mouse model using swabbing and chromogenic culture. It outlines the steps involved in sample collection, plating, and colony counting to quantify GBS load in the mouse vaginal lumen.
04:45
Swab-based Conjunctival Commensal Bacteria Isolation: A Technique to Isolate Commensal Bacteria from Conjunctiva of Murine Model
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2025
This video describes a swab-based technique to isolate viable commensal bacteria from the ocular conjunctiva. The technique can be used to profile the commensal bacterial microbiome of the conjunctiva, which plays a defensive role against pathogens.
12:45
Testing For Genetically Modified Foods
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Genetic modification of foods has been a controversial issue due to debated concerns over health and environmental safety. This experiment demonstrates technical understanding of how food DNA is genetically identified, allowing for educated decision making about the safety and potential dangers of using genetically modified organisms (GMOs) in food supplies. Polymerase Chain Reaction (PCR) is used to amplify food DNA...
00:57
Modified Boxplots
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2023
A standard box and whisker plot informs us about the spread of the data in a given sample. One can identify the minimum value, maximum value, first quartile value, second quartile or median value, and third quartile. However, the box plot does not tell the reader about outliers - values that lie far from the center of the data. We can modify the standard box and whisker plot to identify the outliers and visualize the actual spread of the data in a sample. Initially, we calculate the adjusted...
FAQs
Its main advantage is concentration. During exposure, the absorbent gauze collects microorganisms and associated particulate matter from the water, increasing the amount of material available for laboratory examination. This feature is particularly useful when target organisms occur at low concentrations, because direct sampling may provide too little material for reliable culture, microscopy, or molecular testing.
The gauze provides the absorbent surface that traps microorganisms and particulate matter, while the support keeps it positioned in the water. Flowing water continually brings new material into contact with the swab. A defined exposure period makes sampling duration consistent, allowing results from different collection points or time periods to be interpreted more systematically.
After retrieval, the captured material can be processed by elution and examined using culture, microscopy, or molecular testing. These approaches provide different forms of evidence about the collected microorganisms or particles. The choice of analysis determines whether the investigation emphasizes laboratory growth, microscopic observation, or detection through molecular methods.
A typical workflow includes securing the absorbent gauze to its support, suspending the device in the selected flowing water source, and maintaining it there for a defined exposure period. The swab is then retrieved and transported for laboratory processing. Consistent handling of exposure and transport supports meaningful comparison among environmental samples.
The method is useful when investigators need to examine wastewater or other contaminated water sources for microorganisms that may be difficult to detect in a small direct sample. Its low cost and concentration capability support environmental surveillance, especially when the objective is to assess enteric pathogens or indicators associated with fecal contamination.
In environmental surveillance, collected material can be tested for enteric pathogens, including poliovirus, and for indicators of fecal contamination. Findings can help characterize contamination in a water source and inform assessment of related public health risks. The approach therefore connects field sampling with laboratory evidence used to monitor environmental conditions.