Research on Bacterial Distribution of Public Lavatory

Abstract

Objective: This study was performed to assess bacterial distribution concerned in sanitation management of public lavatory in Seoul. Methods: In this research, bacteriological investigation on public lavatory was accomplished for bidet water, bidet nozzle, washbowl and lavatory stool in the 50 public facilities such as public institutions, subway stations, cinema, department stores, large-scale buildings and hospitals amount to 374 specimens. Results: The geometric mean of colony forming unit(CFU) in total aerobic colony count were analyzed as follows; 5.2 × 10 2 /100 cm 2 on lavatory stool, 7.2 × 10 3 /ea on bidet nozzle, 7.8 × 10 3 /ea on center ring of washbowl, 1.4 × 10/mL in bidet water (ml) and 7.0/ea on doorknob. Opportunistically pathogenic germs such as Staphylococcus aureus, Escherichia coli, Enterobacter cloacae, Pseudomonas aeruginosa were isolated in 3.7%, 5.9%, 3.2% and 1.9% of total specimens, respectively. Conclusion: The result of this study shows that there were some facilities where the pathogenic germs were detected to may cause urological infection. And the CFU of general bacteria as the representative indicator of disinfection and lavatory cleaning were high enough to imply the improvement of sanitation management of public lavatories should be contrived.

Combining culturing and 16S rDNA sequencing to reveal seasonal and room variations of household airborne bacteria and correlative environmental factors in nanjing, southeast china

“…What's more, the distribution of the bioaerosols by airflow and traffic of occupants throughout the same home may have also contributed to the similarity among the different rooms in the same home, 22,38,70 with the exception of bathroom and kitchen in which more moisture and microbial sources were present, such as toilets, showering, and faucet 4,5,39 . We have found that the bathroom and kitchen typically harbor higher bioaerosols than other rooms, which agrees well with previous studies 15,74,75 . On the one hand, the use of toilets, showering, and faucet in the bathroom and kitchen could generate a great number of bioaerosol particles.…”

“…4,5,39 We have found that the bathroom and kitchen typically harbor higher bioaerosols than other rooms, which agrees well with previous studies. 15,74,75 On the one hand, the use of toilets, showering, and faucet in the bathroom and kitchen could generate a great number of bioaerosol particles. It was reported that up to 145,000 bioaerosols particles were produced from toilets after each flushing 4,64 and millions of bioaerosols particles were produced during showering and faucet.…”