Hain T., Steinweg C., Kuenne C., Billion A., Ghai R., Chatterjee S., Domann E., Kärst U., Goesmann A., Bekel T., Bartels D., Kaiser O., Meyer F., Pühler A., Weisshaar B., Wehland J., Liang C., Dandekar T., Lampidis R., Kreft J., Goebel W., Chakraborty T. “Whole-Genome Sequence of Listeria welshimeri Reveals Common Steps in Genome Reduction with Listeria innocua as Compared to Listeria monocytogenes”.

Bubert A., Kuhn M., Goebel W., Kohler S. “Structural and Functional Properties of the p60 Proteins from Different Listeria Species”. 62 :244-251. Genome sequence Biosensors & Bioelectronics.

The species was first proposed in 1983, and is named after Heinz P. R. Seeliger.

L. welshimeri uses proteins and peptides as a source of amino acids using trypsin like serine/cysteine proteases. The coexistence of Listeria species on the same food is not unlikely and occurs more often than just one species at a time. Listeria monocytogenes (listeria) is a bacterium that causes an illness called listeriosis. “Optical forward-scattering for detection of Listeria monocytogenes and other Listeria species”.

Though L. welshimeri is present in the environment and has been isolated from animal and human carriers, studies monitoring its ecology are still rare (6). Vol188 p. 7405-7415. During rearing, slaughter and processing it can be transferred into:Other foods like green vegetables, fruit and shellfish can become contaminated through contact with animal and human faeces. Listeria innocua is the most frequently encountered nonpathogenic Listeria species.

It grows slowly in milk at refrigeration temperature. The species was first isolated from plants, soil, and animal feces in Europe. By 2019, 20 species had been identified. Journal of Bacteriology. 2. 4. L. welshimeri is rod-like and becomes motile using peritrichous flagella (4). In humans, it causes miscarriages and meningitis in its severe form and flu-like …

They can grow in food, even at temperatures of refrigeration. Refer to Current Research Volume 22. p. 1664-1671.

Listeria species are Gram-positive, rod-shaped, and facultatively anaerobic, and do not produce endospores.

2007. volume 5. The vector induces beneficial cell-mediated immunity to both infectious disease and cancer (8) The development of a non-invasive optical forward-scanning system called a “scatterometer” gives rapid identification of bacterial colonies. For example, if raw and cooked foods are stored together, bacteria can spread from the raw food to the cooked food.Some foodborne bacteria can also be spread from pets to people and from person to person through poor hygiene. Volume 174. p. 8166-8171. Microbes andInfections. These bacteria are small ( 0.5 to 2.0µm), non-spore-forming and are motile below 30degrees C by means of peritrichous flagella that uniformly cover its body (2).There are two pathogenic strains of Listeria, including L. monocytogenes and L. ivanovii and there are four non pathogenic strains which include L. L. innocua, L. seeligeri, L. grayi and L. welshimeri (3). Listeria seeligeri is a species of bacteria. 3. There are 233 gene deletions in L. welshimeri when compared to L. monocytogenes and the majority of the deleted portions are in gene clusters. In this study, a total of 2,492 samples from different habitats of the food chain were investigated with respect to the occurrence of members of the genus Listeria.Of 715 isolates obtained from animals (organs and feces), butcher shops (drains and intermediate products), or humans (feces), a total of 44 could be affiliated with L. seeligeri (Table (Table1).

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