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The organism is: M Luteus

Introduction detailing the background, habitat, cell size/shape/arrangement and clinical significance. (APA format; proper use of in-text citations and references must be included; 500 words minimum – word count does not include references or in-text citations)

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Introduction and Summary

Your introduction and summary must be written using APA format. If you are not familiar with APA format, use the Purdue Online Writing Lab (OWL) for more information. You may also reach out to your instructor with any questions regarding APA formatting.

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Introduction

Serratia marcescens

Background

Serratia marcescens in a gram-negative, rod shaped microorganism ranging from 0.5-0.8 μm in diameter and 0.9-2 μm in length. It belongs to the family, Enterobacteriaceae, and can be isolated from soil, water, plants, and insects (Cristina et al., 2019). In terms of colony morphology, Serratia marcescens is capable of producing a red pigment, prodigoisin, when incubated in temperatures up to 32C. Prodigoisin possesses antimicrobial properties and is thought to contribute to more efficient cellular proliferation in Serratia marcescens (Haddix & Shanks, 2018). Comment by Guest: This is an example of a paraphrase.

Clinical significance

Serratia marcescens is considered an opportunistic pathogen, often infecting individuals with weakened immune systems. In particular, this microorganism is responsible for nosocomial infections in neonatal intensive care units (NICUs). Nosocomial infections are defined as infections acquired in a hospital setting (Parker et al., 2016). According to Tavares-Carreon et al. (2023), Serratia marcescens, “[. . .] has been isolated from catheters, oxygenation devices, prefilled syringes, needles, parenteral solutions, milk-drawers, sinks, nails, and hands of health care workers (p. 2).” This organism is often visible as a red biofilm on bathroom surfaces (e.g. toilets, shower tiles) and has the potential to form aerosols, which can then be inhaled or settle on surfaces, such as bath towels (Gerba et al., 1975; Ikpa & Obganda, 2023). Comment by Guest: Et al. if 3 or more authors Comment by Guest: Example of a direct quote. Notice the inclusion of the ellipses if it is quoted after the first word of the sentence. Notice the quotation marks. Notice the inclusion of the page number Comment by Guest: Ampersand if two authors

References

Cristina, M. L., Sartini, M., & Spagnolo, A. M. (2019). Serratia marcescens infections in neonatal intensive care units (NICUs).  International journal of environmental research and public health,  16(4), 610.

Gerba, C. P., Wallis, C., & Melnick, J. L. (1975). Microbiological hazards of household toilets: droplet production and the fate of residual organisms.  Applied microbiology,  30(2), 229-237.

Haddix, P. L., & Shanks, R. M. (2018). Prodigiosin pigment of Serratia marcescens is associated with increased biomass production.  Archives of microbiology,  200, 989-999.

Ikpa, A., & Ogbonda, K. H. (2023). Enhancing Contact Tracing for Serratia marcescens Biofilm on High-Usage Body Towels in Rivers State Bathrooms.  Journal of Healthcare and Biomedical Science,  1(2), 1-10.

Parker, N., Schneegurt, M., Thi Tu, A. H., Foster, B. M., & Lister, P. (2016).  Microbiology (OpenStax). OpenStax.

Tavares-Carreon, F., De Anda-Mora, K., Rojas-Barrera, I. C., & Andrade, A. (2023). Serratia marcescens antibiotic resistance mechanisms of an opportunistic pathogen: a literature review.  PeerJ,  11, e14399.