Mechanized laundering of mops for floor cleaning can reduce infection transmission through hospital floor.

Purpose: Hospital floors are underappreciated reservoir for microbes; therefore, floor cleaning should warrant reduction of microbial load for decreasing risk of infection transmission and has to be aesthetically acceptable. It was aimed to study the impact of mechanized laundering of floor mops in reducing microbial load compared to manual washing.
Methods: An interventional study was conducted from January to July 2019 in various inpatient areas of All India Institute of Medical Sciences, New Delhi. Culture of floor mops were taken after manual washing (pre-intervention) and mechanized laundering(intervention). During intervention, mops were equally divided into two piles, with one pile soaked in sodium hypochlorite for 15-20 min before mechanized laundering and other were put directly for mechanized laundering. Bacterial load in floor mops was observed in each group.
Results: Significant difference (P Value 0.001) in bacterial load was observed in manually washed (502 cfu/plate) and mechanized laundering (278 cfu/plate) of floor mops. Presoaking of floor mops with sodium hypochlorite (262 cfu/plate) did not show any significant difference (P-value 0.59) in reduction of bacterial load compared to mops which were cleaned using mechanized laundering (294 cfu/plate). The bacterial load of floor mops which were manually washed showed increase in mean value of microbial load from 609 cfu/plate from day one to 4015 cfu/plate on day five.
Conclusion: Mechanized laundering of floor mops standardizes the mop cleaning process and brings down the microbial load significantly compared to manual washing. Disinfection of floor mops before mechanized laundering using sodium hypochlorite did not have significant impact on reduction of microbial load.
Competing Interests: Declaration of competing interest None declared.
(Copyright © 2021 Indian Association of Medical Microbiologists. Published by Elsevier B.V. All rights reserved.)