Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory

Ranadeep Ghosh; Sanjeev Das; Jayashree Konar

doi:10.5455/njppp.2022.12.09335202121092021

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Original Research
Online Published: 04 Oct 2021

Natl J Physiol Pharm Pharmacol. 2022; 12(4): 415-417

doi: 10.5455/njppp.2022.12.09335202121092021

Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory

Ranadeep Ghosh, Sanjeev Das, Jayashree Konar.

Abstract
Background: Contamination in a bacteriology laboratory setup may result in erroneous interpretation.

Aim and Objective: To estimate the bacterial isolates from different surfaces of the bacteriology laboratory of a tertiary care hospital.

Materials and Methods: A total number of 165 samples were taken from different surfaces of the laboratory including tabletops, floor, walls, and workbench tops at the beginning of morning session for consecutive thirty working days (June 2019). Surface swab technique was followed using pre-incubated Nutrient agar (Basal plate), Mac-conkeys agar (Selective and differential media), and Blood agar plates (enriched media). Aerobic incubation was done overnight at 37°C. Discrete colonies were studied by Gram, Ziehl-Neelsen, and Albert staining followed by the tests for motility and a series of biochemical reactions.

Results: Out of 165 collected swabs, growth was observed in 23 (13.93%). Out of these 23 isolates, none was from the workbench top. Majority (47.82% i.e., 11/23) was from the floor. Amongst 23 isolates, 14 (60.86%) were Gram-positive in nature and 7 (30.43%) found to be motile. Isolated bacteria comprised Micrococcus spp. (34.78% i.e., 8/23), Pseudomonas spp. (17.39%,4/23), Coagulase-negative Staphylococcus spp. (13.04% i.e., 3/23), Bacillus spp. (13.04%, i.e., 3/23) and Acinetobacter spp. (21.73% i.e., 5/23). From floor, majority of the isolates were Micrococcus spp. (45.45%, i.e., 5/11) whereas in wall, mostly Bacillus spp. (33.33%, i.e., 3/9) and tabletop, all of the isolates were Coagulase-negative Staphylococcus spp.

Conclusion: Vigilant disinfection and maintenance of personal hygiene of laboratory workers are essential to eliminate contamination.

Key words: Contamination; Bacteria; Disinfection

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Pubmed Style

Ghosh R, Das S, Konar J. Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. Natl J Physiol Pharm Pharmacol. 2022; 12(4): 415-417. doi:10.5455/njppp.2022.12.09335202121092021

Web Style

Ghosh R, Das S, Konar J. Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. https://www.njppp.com/?mno=125150 [Access: January 18, 2025]. doi:10.5455/njppp.2022.12.09335202121092021

AMA (American Medical Association) Style

Ghosh R, Das S, Konar J. Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. Natl J Physiol Pharm Pharmacol. 2022; 12(4): 415-417. doi:10.5455/njppp.2022.12.09335202121092021

Vancouver/ICMJE Style

Ghosh R, Das S, Konar J. Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. Natl J Physiol Pharm Pharmacol. (2022), [cited January 18, 2025]; 12(4): 415-417. doi:10.5455/njppp.2022.12.09335202121092021

Harvard Style

Ghosh, R., Das, . S. & Konar, . J. (2022) Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. Natl J Physiol Pharm Pharmacol, 12 (4), 415-417. doi:10.5455/njppp.2022.12.09335202121092021

Turabian Style

Ghosh, Ranadeep, Sanjeev Das, and Jayashree Konar. 2022. Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. National Journal of Physiology, Pharmacy and Pharmacology, 12 (4), 415-417. doi:10.5455/njppp.2022.12.09335202121092021

Chicago Style

Ghosh, Ranadeep, Sanjeev Das, and Jayashree Konar. "Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory." National Journal of Physiology, Pharmacy and Pharmacology 12 (2022), 415-417. doi:10.5455/njppp.2022.12.09335202121092021

MLA (The Modern Language Association) Style

Ghosh, Ranadeep, Sanjeev Das, and Jayashree Konar. "Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory." National Journal of Physiology, Pharmacy and Pharmacology 12.4 (2022), 415-417. Print. doi:10.5455/njppp.2022.12.09335202121092021

APA (American Psychological Association) Style

Ghosh, R., Das, . S. & Konar, . J. (2022) Burden of bacterial contamination: A cross-sectional study to estimate the bacterial isolates from the surfaces of a bacteriology laboratory. National Journal of Physiology, Pharmacy and Pharmacology, 12 (4), 415-417. doi:10.5455/njppp.2022.12.09335202121092021

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