An Introductory Study into the Advantages of the Sigma-Transwab® Open Cell Polyurethane Foam Swabs in Microbiological Transport Systems with Improved Cellular Flow Dynamics and Reduced Sample Entrapment in Microorganism Detection

Bacterial entrapment within microbiological transport systems prior to inoculation can reduce diagnostic sensitivity. Newer transport designs, such as polyurethane foam–based systems (e.g. MWE Σ-TRANSWAB®), aim to improve cellular release into the liquid phase and enhance flow dynamics. This approach supports compatibility with automated inoculation platforms and molecular techniques, including PCR and MALDI-TOF, by improving organism availability for downstream detection. Compared with conventional swab formats, liquid-based and foam-assisted systems reduce organism retention within the swab matrix, resulting in improved recovery of microorganisms—particularly in mixed flora and infection control contexts such as MRSA surveillance.